{"title":"Solutions","description":"\u003ch2\u003eKeep Every Reading Honest\u003c\/h2\u003e\n\u003cp\u003eMeters measure, but solutions verify. Probes age, electrodes foul, and reference gels dry out with every use. Calibration and storage solutions reset that slow decline and turn a drifting instrument back into a precise one. Treating them as routine maintenance protects your meter, your nutrient budget, and ultimately the crop.\u003c\/p\u003e\n\u003ch3\u003eCatch Probe Drift Before It Reaches the Crop\u003c\/h3\u003e\n\u003cp\u003eBluelab formulates each solution to match its own probes, so growers verify accuracy with the same standards the meters are built around.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrated Probes Respond Faster\u003c\/strong\u003e: \u003ca href=\"\/products\/bluelab-kcl-storage-solution-keep-probes-hydrated\" title=\"Bluelab pH probe KCl storage solution\" alt=\"Bluelab KCl storage solution\"\u003eBluelab KCl Storage Solution\u003c\/a\u003e keeps the pH junction wet between readings. It prevents the sluggish response and wandering numbers that follow a dried-out probe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerified EC and PPM Accuracy\u003c\/strong\u003e: The \u003ca href=\"\/products\/bluelab-277-ec-standard-solution-verify-ec-accuracy\" title=\"Bluelab 2.77 EC conductivity standard solution\" alt=\"Bluelab 2.77 EC standard solution\"\u003e2.77 EC standard\u003c\/a\u003e gives conductivity probes a fixed checkpoint, so growers confirm feed strength instead of assuming it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne Standard Across the Lineup\u003c\/strong\u003e: These solutions work with every Bluelab pH pen and probe, from the \u003ca href=\"\/products\/bluelab-onepen-ph-ec-temp-meter-bluetooth-connected\" title=\"Bluelab OnePen 3-in-1 pH, EC and temperature meter\" alt=\"Bluelab OnePen meter\"\u003eBluelab OnePen\u003c\/a\u003e to inline controller probes. A mixed fleet runs on a single maintenance routine.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMatching Solution Format to Your Workflow\u003c\/h3\u003e\n\u003cp\u003eHow often you calibrate and how many probes you maintain determine whether single-use sachets or bulk bottles make more sense.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortable and Small-Scale Growers\u003c\/strong\u003e: The \u003ca href=\"\/products\/bluelab-30-sachet-box-ph-ec-storage-on-the-go\" title=\"Bluelab solution sachet box for calibration and storage\" alt=\"Bluelab solution sachets\"\u003eBluelab sachet box\u003c\/a\u003e packs tear-open, single-use pouches that eliminate shared-bottle contamination. The mixed box covers pH, EC, and storage in one kit bag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial Rooms and Automated Dosing\u003c\/strong\u003e: Facilities running a \u003ca href=\"\/products\/bluelab-pro-controller-wifi-multi-nutrient-dosing\" title=\"Bluelab Pro Controller Wi-Fi automated dosing\" alt=\"Bluelab Pro Controller Wi-Fi\"\u003eBluelab Pro Controller\u003c\/a\u003e depend on probe accuracy to dose correctly. Box-of-6 case packs keep calibration stock on hand for every reservoir.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAct on the Reading\u003c\/strong\u003e: Calibrated readings only matter when growers correct the solution. Keep a pH adjuster such as \u003ca href=\"\/products\/drip-hydro-ph-down-phosphoric-acid-buffer\" title=\"Drip Hydro pH Down phosphoric acid buffer\" alt=\"Drip Hydro pH Down\"\u003eDrip Hydro pH Down\u003c\/a\u003e beside the reservoir to bring nutrient mixes back into range.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRunning Aqua Master Tools meters instead? Browse \u003ca href=\"\/collections\/calibration-solutions\" title=\"Aqua Master Tools calibration solutions\" alt=\"Calibration solutions\"\u003eCalibration Solutions\u003c\/a\u003e for matching buffers and storage fluids.\u003c\/p\u003e\n\u003ch3\u003eCalibration Habits That Extend Probe Life\u003c\/h3\u003e\n\u003cp\u003eGood solutions deliver their full value only when paired with sound technique.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePour, Never Dip\u003c\/strong\u003e: Pour a small amount of buffer into a clean cap and discard it after use. Dipping a probe straight into the bottle contaminates the entire supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse Between Buffers\u003c\/strong\u003e: Rinse the probe in clean water between the pH 7.0 and pH 4.0 steps, so one buffer doesn't skew the next reading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibrate After Cleaning\u003c\/strong\u003e: Clean the probe first, then calibrate and check EC against the 2.77 standard. Growers who follow this order catch drift before it reaches the feed schedule.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAccurate pH and EC numbers form the foundation of every successful feeding program, and calibrated probes make those numbers dependable. To put reliable readings to work, explore \u003ca href=\"\/blogs\/Articles\/cannabis-nutrients-101-what-you-need-to-know\" title=\"Cannabis Nutrients 101 guide\" alt=\"Cannabis nutrients 101 article\"\u003eCannabis Nutrients 101: What You Need to Know\u003c\/a\u003e for mixing, feeding, and flushing fundamentals.\u003c\/p\u003e\n\n\u003cstyle\u003e\n  .faq-container { text-align: left; }\n  .faq-item { margin-bottom: 1rem; }\n  .faq-question { font-weight: bold; margin-bottom: 0.25rem; }\n  .faq-answer { margin-left: 0; }\n\u003c\/style\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/FAQPage\" itemscope=\"\" class=\"faq-container\"\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003cdiv itemprop=\"name\" class=\"faq-question\"\u003eWhy do I need both pH 7.0 and pH 4.0 calibration solutions?\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\" class=\"faq-answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003eA 2-point calibration sets both the neutral point and the slope of the probe's response. pH 7.0 anchors neutral, and pH 4.0 confirms accuracy in the acidic range where hydroponic and soil nutrient solutions typically run. Calibrating with only one buffer leaves the meter's slope unverified.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003cdiv itemprop=\"name\" class=\"faq-question\"\u003eHow often should I calibrate my pH meter?\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\" class=\"faq-answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003eCalibrate at least every 30 days, after every probe cleaning, and any time readings seem inconsistent. Commercial operations running continuous monitors or automated dosing often calibrate more frequently, because a drifting probe directly affects dosing accuracy.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003cdiv itemprop=\"name\" class=\"faq-question\"\u003eWhat does KCl storage solution do?\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\" class=\"faq-answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003eKCl (potassium chloride) storage solution keeps the pH probe's glass bulb and reference junction hydrated between uses. A hydrated probe responds quickly and reads accurately, while a probe stored dry or in pure water slows down, drifts, and wears out sooner.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003cdiv itemprop=\"name\" class=\"faq-question\"\u003eDo I need to calibrate my EC or conductivity meter?\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\" class=\"faq-answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003eMany Bluelab conductivity products ship factory-calibrated and need no routine calibration. Growers should still check them periodically against the 2.77 EC standard solution, especially after cleaning, to confirm readings remain accurate.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003cdiv itemprop=\"name\" class=\"faq-question\"\u003eShould I choose sachets or bottles?\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\" class=\"faq-answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003eSachets suit growers who calibrate away from the main setup or want zero risk of cross-contamination, since each pouch serves a single application. Bottles in box-of-6 case packs suit commercial rooms that calibrate multiple probes on a regular schedule and want a lower cost per calibration.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003cdiv itemprop=\"name\" class=\"faq-question\"\u003eCan I reuse calibration solution?\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\" class=\"faq-answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003eNo. Once a probe touches a buffer, residue from the probe changes the solution's value. Pour a fresh amount for each calibration, discard it afterward, and keep the bottle tightly capped to protect the remaining supply.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Question\" itemprop=\"mainEntity\" itemscope=\"\" class=\"faq-item\"\u003e\n\u003cdiv itemprop=\"name\" class=\"faq-question\"\u003eDo Bluelab solutions work with other meter brands?\u003c\/div\u003e\n\u003cdiv itemtype=\"https:\/\/schema.org\/Answer\" itemprop=\"acceptedAnswer\" itemscope=\"\" class=\"faq-answer\"\u003e\n\u003cdiv itemprop=\"text\"\u003epH 7.0 and pH 4.0 buffers are standard reference values, so they calibrate any meter that uses those points. EC standards vary by brand, however. Check your meter's manual for its required conductivity reference before substituting the 2.77 EC solution.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","products":[{"product_id":"bluelab-kcl-storage-solution-keep-probes-hydrated","title":"Bluelab pH Probe KCl Storage Solution","description":"\u003ch4\u003e\u003c\/h4\u003e\u003ch2\u003eBluelab pH Probe KCl Storage Solution - Probe Hydration \u0026amp; Storage Solution\u003c\/h2\u003e\u003cdiv\u003e\n\u003cp\u003eA pH probe left dry between uses loses accuracy fast, and once a probe dries out, response times slow down and readings drift. Bluelab pH Probe KCl Storage Solution solves this by keeping your \u003ca href=\"\/products\/bluelab-ph-probe-double-junction-bnc-connector\"\u003epH probe\u003c\/a\u003e or \u003ca href=\"\/products\/bluelab-ph-pen-compact-ph-temp-reader-floats\"\u003ewaterproof pH pen\u003c\/a\u003e properly hydrated whenever it's not in use, protecting its accuracy and extending its working life.\u003c\/p\u003e\n\u003cp\u003eSimply store your probe tip in the KCl solution between measurements to keep it in ready-to-use condition. It's suited to any \u003ca href=\"\/products\/bluelab-ph-probe-double-junction-bnc-connector\"\u003eBluelab pH probe\u003c\/a\u003e or \u003ca href=\"\/products\/bluelab-ph-penplus-ph-temp-meter-replaceable-probe\"\u003ereplaceable probe pen\u003c\/a\u003e, making it an easy addition to routine maintenance for growers running one meter or managing a full commercial fleet.\u003c\/p\u003e\n\u003cp\u003eAvailable in 120ml (4.06fl.oz.) and 250ml (8.4fl.oz.) single bottles, as well as box-of-6 case packs of each size — choose the option that matches your usage and restocking needs from the size selector.\u003c\/p\u003e\n\u003c\/div\u003e\u003ch4\u003eFeatures\u003c\/h4\u003e\u003cstyle\u003e.features-grid-container{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;padding:2rem 0;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;margin:0 auto;max-width:1240px;}.feature-card{background-color:transparent;padding:1.5rem;border-radius:8px;text-align:center;flex:0 1 280px;box-sizing:border-box;}\u003c\/style\u003e\u003cdiv class=\"features-grid-container\"\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e💧\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eKeeps Probes Hydrated\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eProtects probe accuracy and response time between uses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🔗\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eFits All \u003ca href=\"\/products\/bluelab-ph-probe-double-junction-bnc-connector\"\u003eBluelab pH Probes\u003c\/a\u003e \u0026amp; \u003ca href=\"\/products\/bluelab-ph-pen-compact-ph-temp-reader-floats\"\u003ePens\u003c\/a\u003e\n\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eA universal storage solution for your whole pH meter lineup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e📦\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eAvailable in Multiple Sizes\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003e120ml and 250ml bottles, plus box-of-6 case packs of each.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch4 style=\"margin-bottom: 0;\"\u003eSpecifications\u003c\/h4\u003e\u003cstyle\u003e.styled-spec-container{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid #eee;border-radius:8px;margin-bottom:1em;}.styled-spec-table{width:100%;border-collapse:collapse;}.styled-spec-table thead{background-color:#f8f8f8;}.styled-spec-table th,.styled-spec-table td{padding:12px 15px;text-align:left;vertical-align:top;}.styled-spec-table th{font-weight:bold;color:#333;border-bottom:2px solid #ccc;}.styled-spec-table td{border-bottom:1px solid #eee;}.styled-spec-table tbody td:first-child{font-weight:500;color:#444;}.styled-spec-table tbody tr:last-child td{border-bottom:none;}\u003c\/style\u003e\u003cdiv class=\"styled-spec-container\"\u003e\u003ctable class=\"styled-spec-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eVolume\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Bottle\u003c\/td\u003e\n\u003ctd\u003e120ml \/ 4.06fl.oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Bottle\u003c\/td\u003e\n\u003ctd\u003e250ml \/ 8.4fl.oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Pack\u003c\/td\u003e\n\u003ctd\u003eBox of 6 — 120ml \/ 4.06fl.oz. bottles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Pack\u003c\/td\u003e\n\u003ctd\u003eBox of 6 — 250ml \/ 8.4fl.oz. bottles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\u003cdiv class=\"faq-container\"\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat is KCl Storage Solution used for?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIt keeps your pH probe or pen tip hydrated when not in use, protecting the probe's accuracy and response time.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhich Bluelab probes is this compatible with?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIt's suited to any \u003ca href=\"\/products\/bluelab-soil-ph-probe-soil-substrate-solution\"\u003eBluelab soil pH probe\u003c\/a\u003e or \u003ca href=\"\/products\/bluelab-onepen-ph-ec-temp-meter-bluetooth-connected\"\u003eOnePen meter\u003c\/a\u003e that requires hydrated storage.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat sizes are available?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIt's available in 120ml and 250ml single bottles, as well as box-of-6 case packs of each size.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eHow often should I replace the storage solution?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eTop up or replace the solution whenever your probe cap runs dry, ensuring the probe tip always stays adequately hydrated between uses.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eShould I get the case pack instead of a single bottle?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eThe box-of-6 case packs are a good fit if you're managing multiple probes or restocking regularly, while a single bottle suits occasional or single-meter use.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"120 ml - Box of 6","offer_id":52495645769944,"sku":"STSOL120BL","price":115.0,"currency_code":"USD","in_stock":true},{"title":"250 ml - Box of 6","offer_id":52495645802712,"sku":"STSOL250BL","price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Bluelab_pH_Probe_KCl_Storage_Solution_120ml.webp?v=1789747475"},{"product_id":"bluelab-277-ec-standard-solution-verify-ec-accuracy","title":"Bluelab 2.77 EC Conductivity Standard Solution","description":"\u003ch4\u003e\u003c\/h4\u003e\u003ch2\u003eBluelab 2.77 EC Conductivity Standard Solution - EC\/PPM Calibration Check Solution\u003c\/h2\u003e\u003cdiv\u003e\n\u003cp\u003eA \u003ca href=\"\/products\/bluelab-pro-controller-ec-probe-low-maintenance\"\u003econductivity probe\u003c\/a\u003e can silently drift out of accurate range without any obvious sign, throwing off EC and PPM readings across your whole nutrient program. Bluelab 2.77 EC Conductivity Standard Solution solves this by giving you a known reference point to check your probe's accuracy against, so drift gets caught before it affects your feeding schedule.\u003c\/p\u003e\n\u003cp\u003eTesting against the 2.77 EC standard regularly, especially after cleaning your probe, helps confirm readings are still on target and keeps your EC\/PPM accuracy dependable over time. It's a fundamental part of any grower's maintenance toolbox, whether you're running a single \u003ca href=\"\/products\/bluelab-conductivity-pen-ec-temp-reader-ready-to-use\"\u003ehandheld meter\u003c\/a\u003e or a full \u003ca href=\"\/products\/bluelab-guardian-monitor-wifi-alarms-edenic-app-alerts\"\u003ecommercial monitoring setup\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eAvailable in 250ml (8.4fl.oz.) and 500ml (16.9fl.oz.) single bottles, as well as box-of-6 case packs of each size — choose the option that matches your usage and restocking needs from the size selector.\u003c\/p\u003e\n\u003c\/div\u003e\u003ch4\u003eFeatures\u003c\/h4\u003e\u003cstyle\u003e.features-grid-container{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;padding:2rem 0;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;margin:0 auto;max-width:1240px;}.feature-card{background-color:transparent;padding:1.5rem;border-radius:8px;text-align:center;flex:0 1 280px;box-sizing:border-box;}\u003c\/style\u003e\u003cdiv class=\"features-grid-container\"\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🎯\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eVerifies EC\/PPM Accuracy\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eA known 2.77 EC reference point catches drift in tools like the \u003ca href=\"\/products\/bluelab-truncheon-meter-ec-cf-ppm-no-calibration\"\u003eBluelab Truncheon Meter\u003c\/a\u003e early.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🧼\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003ePairs with Regular Cleaning\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eTesting after cleaning confirms your probe is still accurate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e📦\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eAvailable in Multiple Sizes\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003e250ml and 500ml bottles, plus box-of-6 case packs of each.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch4 style=\"margin-bottom: 0;\"\u003eSpecifications\u003c\/h4\u003e\u003cstyle\u003e.styled-spec-container{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid #eee;border-radius:8px;margin-bottom:1em;}.styled-spec-table{width:100%;border-collapse:collapse;}.styled-spec-table thead{background-color:#f8f8f8;}.styled-spec-table th,.styled-spec-table td{padding:12px 15px;text-align:left;vertical-align:top;}.styled-spec-table th{font-weight:bold;color:#333;border-bottom:2px solid #ccc;}.styled-spec-table td{border-bottom:1px solid #eee;}.styled-spec-table tbody td:first-child{font-weight:500;color:#444;}.styled-spec-table tbody tr:last-child td{border-bottom:none;}\u003c\/style\u003e\u003cdiv class=\"styled-spec-container\"\u003e\u003ctable class=\"styled-spec-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eVolume\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Bottle\u003c\/td\u003e\n\u003ctd\u003e250ml \/ 8.4fl.oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Bottle\u003c\/td\u003e\n\u003ctd\u003e500ml \/ 16.9fl.oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Pack\u003c\/td\u003e\n\u003ctd\u003eBox of 6 — 250ml \/ 8.4fl.oz. bottles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Pack\u003c\/td\u003e\n\u003ctd\u003eBox of 6 — 500ml \/ 16.9fl.oz. bottles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\u003cdiv class=\"faq-container\"\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat is the 2.77 EC Conductivity Standard Solution used for?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIt's a known reference solution used to check your conductivity probe's accuracy, helping you catch drift before it affects your EC\/PPM readings.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eHow often should I test my probe against this standard?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eTesting regularly, especially right after cleaning your probe, helps confirm your readings are still accurate.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat sizes are available?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIt's available in 250ml and 500ml single bottles, as well as box-of-6 case packs; for portable testing, we also offer the \u003ca href=\"\/products\/bluelab-30-sachet-box-ph-ec-storage-on-the-go\"\u003eBluelab Solution Sachet Box\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eIs this the same as a calibration solution?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIt's used to verify accuracy rather than calibrate the probe directly — think of it as a check to confirm your probe is still reading correctly.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eShould I get the case pack instead of a single bottle?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eThe box-of-6 case packs are a good fit if you're managing multiple probes or testing regularly, while a single bottle suits occasional use.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"250 ml - Box of 6","offer_id":52495666512088,"sku":"EC277250BL","price":89.0,"currency_code":"USD","in_stock":true},{"title":"500 ml - Box of 6","offer_id":52495666479320,"sku":"EC277500BL","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Bluelab_2.77_EC_Conductivity_Standard_Solution_250ml.webp?v=1789748425"},{"product_id":"bluelab-ph-40-buffer-low-range-calibration","title":"Bluelab pH 4.0 Calibration Solution","description":"\u003ch4\u003e\u003c\/h4\u003e\u003ch2\u003eBluelab pH 4.0 Calibration Solution - pH Meter Calibration Standard\u003c\/h2\u003e\u003cdiv\u003e\n\u003cp\u003eA pH meter that hasn't been calibrated recently can drift silently off target, throwing off nutrient decisions before you notice anything's wrong. Bluelab pH 4.0 Calibration Solution solves this by giving your \u003ca href=\"\/products\/bluelab-ph-pen-compact-ph-temp-reader-floats\"\u003eBluelab pH Pen\u003c\/a\u003e or meter a known reference point to calibrate against, keeping readings accurate and dependable.\u003c\/p\u003e\n\u003cp\u003eRegular cleaning and calibration boost the longevity of your \u003ca href=\"\/products\/bluelab-ph-probe-double-junction-bnc-connector\"\u003epH probes\u003c\/a\u003e, and the pH 4.0 solution is a core part of that routine — a must-have in every grower's maintenance toolbox alongside \u003ca href=\"\/products\/bluelab-ph-7-buffer-neutral-point-calibration\"\u003eBluelab pH 7.0 Calibration Solution\u003c\/a\u003e for standard 2-point calibration.\u003c\/p\u003e\n\u003cp\u003eAvailable in 250ml (8.4fl.oz.) and 500ml single bottles, as well as box-of-6 case packs of each size — choose the option that matches your usage and restocking needs from the size selector.\u003c\/p\u003e\n\u003c\/div\u003e\u003ch4\u003eFeatures\u003c\/h4\u003e\u003cstyle\u003e.features-grid-container{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;padding:2rem 0;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;margin:0 auto;max-width:1240px;}.feature-card{background-color:transparent;padding:1.5rem;border-radius:8px;text-align:center;flex:0 1 280px;box-sizing:border-box;}\u003c\/style\u003e\u003cdiv class=\"features-grid-container\"\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🎯\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eAccurate pH Calibration\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eA known 4.0 pH reference point keeps your meter reading true.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🔧\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eExtends Probe Longevity\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eRegular calibration and cleaning with \u003ca href=\"\/products\/bluelab-kcl-storage-solution-keep-probes-hydrated\"\u003estorage solution\u003c\/a\u003e keep your pH probe performing longer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e📦\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eAvailable in Multiple Sizes\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003e250ml and 500ml bottles, plus box-of-6 case packs of each.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch4 style=\"margin-bottom: 0;\"\u003eSpecifications\u003c\/h4\u003e\u003cstyle\u003e.styled-spec-container{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid #eee;border-radius:8px;margin-bottom:1em;}.styled-spec-table{width:100%;border-collapse:collapse;}.styled-spec-table thead{background-color:#f8f8f8;}.styled-spec-table th,.styled-spec-table td{padding:12px 15px;text-align:left;vertical-align:top;}.styled-spec-table th{font-weight:bold;color:#333;border-bottom:2px solid #ccc;}.styled-spec-table td{border-bottom:1px solid #eee;}.styled-spec-table tbody td:first-child{font-weight:500;color:#444;}.styled-spec-table tbody tr:last-child td{border-bottom:none;}\u003c\/style\u003e\u003cdiv class=\"styled-spec-container\"\u003e\u003ctable class=\"styled-spec-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eVolume\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Bottle\u003c\/td\u003e\n\u003ctd\u003e250ml \/ 8.4fl.oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Bottle\u003c\/td\u003e\n\u003ctd\u003e500ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Pack\u003c\/td\u003e\n\u003ctd\u003eBox of 6 — 250ml bottles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Pack\u003c\/td\u003e\n\u003ctd\u003eBox of 6 — 500ml bottles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\u003cdiv class=\"faq-container\"\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat is pH 4.0 Calibration Solution used for?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIt's a known reference solution used to calibrate your pH meter or pen, ensuring readings stay accurate over time.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eDo I need both pH 4.0 and pH 7.0 solutions?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eYes. Standard 2-point calibration uses both pH 4.0 and \u003ca href=\"\/products\/bluelab-ph-7-buffer-neutral-point-calibration\"\u003epH 7.0 solutions\u003c\/a\u003e together to ensure accuracy across your meter's full range.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat sizes are available?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIt's available in 250ml and 500ml single bottles, as well as box-of-6 case packs of each size.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eHow often should I calibrate my pH meter?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eRegular calibration helps extend the life and accuracy of your probe — check your specific meter's manual for a recommended schedule.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eShould I get the case pack instead of a single bottle?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eThe box-of-6 case packs are a good fit if you're managing multiple meters or calibrating regularly, while a single bottle suits occasional use.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"250 ml - Box of 6","offer_id":52495699411160,"sku":"PH4250BL","price":89.0,"currency_code":"USD","in_stock":true},{"title":"500 ml - Box of 6","offer_id":52495699443928,"sku":"PH4500BL","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Bluelab_pH_4_Calibration_Solution_250ml.webp?v=1789748795"},{"product_id":"bluelab-ph-7-buffer-neutral-point-calibration","title":"Bluelab pH 7.0 Calibration Solution","description":"\u003ch4\u003e\u003c\/h4\u003e\u003ch2\u003eBluelab pH 7.0 Calibration Solution - pH Meter Calibration Standard\u003c\/h2\u003e\u003cdiv\u003e\n\u003cp\u003eA pH meter that hasn't been calibrated recently can drift silently off target, throwing off nutrient decisions before you notice anything's wrong. Bluelab pH 7.0 Calibration Solution solves this by giving your \u003ca href=\"\/products\/bluelab-ph-pen-compact-ph-temp-reader-floats\"\u003ewaterproof pH pen\u003c\/a\u003e or meter a known neutral reference point to calibrate against, keeping readings accurate and dependable.\u003c\/p\u003e\n\u003cp\u003eRegular cleaning and calibration boost the longevity of your \u003ca href=\"\/products\/bluelab-ph-probe-double-junction-bnc-connector\"\u003epH probes\u003c\/a\u003e, and the pH 7.0 solution is a core part of that routine — a must-have in every grower's maintenance toolbox alongside \u003ca href=\"\/products\/bluelab-ph-40-buffer-low-range-calibration\"\u003epH 4.0 solution\u003c\/a\u003e for standard 2-point calibration.\u003c\/p\u003e\n\u003cp\u003eAvailable in 250ml (8.4fl.oz.) and 500ml single bottles, as well as box-of-6 case packs of each size — choose the option that matches your usage and restocking needs from the size selector.\u003c\/p\u003e\n\u003c\/div\u003e\u003ch4\u003eFeatures\u003c\/h4\u003e\u003cstyle\u003e.features-grid-container{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;padding:2rem 0;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;margin:0 auto;max-width:1240px;}.feature-card{background-color:transparent;padding:1.5rem;border-radius:8px;text-align:center;flex:0 1 280px;box-sizing:border-box;}\u003c\/style\u003e\u003cdiv class=\"features-grid-container\"\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🎯\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eAccurate pH Calibration\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eA known neutral 7.0 pH reference point keeps your \u003ca href=\"\/products\/bluelab-combo-meter-replaceable-ph-ec-probes-portable\"\u003eportable combo meter\u003c\/a\u003e reading true.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🔧\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eExtends Probe Longevity\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003eRegular calibration and cleaning keep your pH probe performing longer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e📦\u003c\/span\u003e\u003ch5 style=\"font-size:1.1em;font-weight:bold;color:#333;margin:0.75rem 0 0.5rem 0;\"\u003eAvailable in Multiple Sizes\u003c\/h5\u003e\n\u003cp style=\"font-size:0.95em;line-height:1.6;color:#555;margin:0;\"\u003e250ml and 500ml bottles, plus box-of-6 case packs of each.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch4 style=\"margin-bottom: 0;\"\u003eSpecifications\u003c\/h4\u003e\u003cstyle\u003e.styled-spec-container{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid #eee;border-radius:8px;margin-bottom:1em;}.styled-spec-table{width:100%;border-collapse:collapse;}.styled-spec-table thead{background-color:#f8f8f8;}.styled-spec-table th,.styled-spec-table td{padding:12px 15px;text-align:left;vertical-align:top;}.styled-spec-table th{font-weight:bold;color:#333;border-bottom:2px solid #ccc;}.styled-spec-table td{border-bottom:1px solid #eee;}.styled-spec-table tbody td:first-child{font-weight:500;color:#444;}.styled-spec-table tbody tr:last-child td{border-bottom:none;}\u003c\/style\u003e\u003cdiv class=\"styled-spec-container\"\u003e\u003ctable class=\"styled-spec-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eVolume\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Bottle\u003c\/td\u003e\n\u003ctd\u003e250ml \/ 8.4fl.oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Bottle\u003c\/td\u003e\n\u003ctd\u003e500ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Pack\u003c\/td\u003e\n\u003ctd\u003eBox of 6 — 250ml bottles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase Pack\u003c\/td\u003e\n\u003ctd\u003eBox of 6 — 500ml bottles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\u003cdiv class=\"faq-container\"\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat is pH 7.0 Calibration Solution used for?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIt's a known neutral reference solution used to calibrate your \u003ca href=\"\/products\/bluelab-ph-penplus-ph-temp-meter-replaceable-probe\"\u003epH pen or meter\u003c\/a\u003e, ensuring readings stay accurate over time.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eDo I need both pH 7.0 and pH 4.0 solutions?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eYes. Standard 2-point calibration uses both pH 7.0 and \u003ca href=\"\/products\/bluelab-ph-40-buffer-low-range-calibration\"\u003epH 4.0 solutions\u003c\/a\u003e together to ensure accuracy across your meter's full range.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat sizes are available?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIt's available in 250ml and 500ml single bottles, as well as box-of-6 case packs of each size.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eHow often should I calibrate my pH meter?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eRegular calibration helps extend the life and accuracy of your probe — check your specific meter's manual for a recommended schedule.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eShould I get the case pack instead of a single bottle?\u003c\/span\u003e\u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eThe box-of-6 case packs are a good fit if you're managing multiple meters or calibrating regularly, while a single bottle suits occasional use.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"250 ml - Box of 6","offer_id":52495719629016,"sku":"PH7250BL","price":89.0,"currency_code":"USD","in_stock":true},{"title":"500 ml - Box of 6","offer_id":52495719661784,"sku":"PH7500BL","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Bluelab_pH_7_Calibration_Solution_250ml_4adfde22-2254-4582-9f65-99a24601ab3b.webp?v=1789749273"},{"product_id":"bluelab-30-sachet-box-ph-ec-storage-on-the-go","title":"Bluelab Solution Sachet (Box of 60) - Calibration \u0026 Storage Range","description":"\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\u003ch2\u003eBluelab Solution Sachet (Box of 30) - Calibration \u0026amp; Storage Range\u003c\/h2\u003e\u003cdiv\u003e\n\u003cp\u003eCarrying full bottles of calibration and storage solution isn't practical for growers who need to check or maintain probes away from the main setup. The Bluelab Solution Sachet 30 Box solves this with single-use, quick tear-open sachets sized for on-the-go calibration and probe storage, keeping your \u003ca href=\"\/products\/bluelab-ph-pen-compact-ph-temp-reader-floats\"\u003eBluelab pH Pen\u003c\/a\u003e or \u003ca href=\"\/products\/bluelab-conductivity-pen-ec-temp-reader-ready-to-use\"\u003eConductivity Pen\u003c\/a\u003e accurate wherever you're working.\u003c\/p\u003e\n\u003cp\u003eEach box contains 30 individual 18ml (0.6fl.oz.) sachets, easy to open and use in a single application without measuring or risk of contamination from a shared bottle. Choose the single-solution box that matches your routine, or the Mixed box for a ready-made assortment covering full 2-point pH calibration plus EC and storage needs.\u003c\/p\u003e\n\u003c\/div\u003e\u003ch4\u003eFeatures\u003c\/h4\u003e\u003cstyle\u003e.features-grid-container{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;padding:2rem 0;font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;margin:0 auto;max-width:1240px;}.feature-card{background-color:transparent;padding:1.5rem;border-radius:8px;text-align:center;flex:0 1 280px;box-sizing:border-box;}\u003c\/style\u003e\u003cdiv class=\"features-grid-container\"\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e📦\u003c\/span\u003e\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003e30 Single-Use Sachets\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eEach box contains 30x 18ml (0.6fl.oz.) tear-open sachets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🎒\u003c\/span\u003e\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eBuilt for On-the-Go Use\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eCompact, single-application sachets fit easily in any kit or pocket.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"feature-card\"\u003e\n\u003cspan style=\"font-size: 2.5em; line-height: 1; color: #2c5530;\"\u003e🔢\u003c\/span\u003e\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eChoice of Solution Type\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eSelect a single solution type or a ready-made Mixed assortment box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch4 style=\"margin-bottom: 0;\"\u003eSpecifications\u003c\/h4\u003e\u003cstyle\u003e.styled-spec-container{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid #eee;border-radius:8px;margin-bottom:1em;}.styled-spec-table{width:100%;border-collapse:collapse;}.styled-spec-table thead{background-color:#f8f8f8;}.styled-spec-table th,.styled-spec-table td{padding:12px 15px;text-align:left;vertical-align:top;}.styled-spec-table th{font-weight:bold;color:#333;border-bottom:2px solid #ccc;}.styled-spec-table td{border-bottom:1px solid #eee;}.styled-spec-table tbody td:first-child{font-weight:500;color:#444;}.styled-spec-table tbody tr:last-child td{border-bottom:none;}\u003c\/style\u003e\u003cdiv class=\"styled-spec-container\"\u003e\u003ctable class=\"styled-spec-table\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eBox Option\u003c\/th\u003e\n\u003cth\u003eContents\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bluelab-ph-7-buffer-neutral-point-calibration\"\u003epH 7.0 Calibration Solution\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e30x 18ml \/ 0.6fl.oz. single-use sachets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bluelab-277-ec-standard-solution-verify-ec-accuracy\"\u003e2.77 EC Conductivity Solution\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e30x 18ml \/ 0.6fl.oz. single-use sachets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bluelab-kcl-storage-solution-keep-probes-hydrated\"\u003eKCl Storage Solution\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e30x 18ml \/ 0.6fl.oz. single-use sachets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bluelab-ph-40-buffer-low-range-calibration\"\u003epH 4.0 Calibration Solution\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e30x 18ml \/ 0.6fl.oz. single-use sachets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMixed Assortment\u003c\/td\u003e\n\u003ctd\u003e10x pH 4.0, 10x pH 7.0, 5x 2.77 EC, 5x KCl Storage (30 total, 18ml \/ 0.6fl.oz. each)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\u003cdiv class=\"faq-container\"\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat's the difference between the single-type boxes and the Mixed box?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eA single-type box gives you 30 sachets of one solution, while the Mixed box provides a assortment of 10x pH 4.0, 10x pH 7.0, 5x 2.77 EC, and 5x KCl Storage sachets in one box.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eHow much solution is in each sachet?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eEach sachet contains 18ml (0.6fl.oz.), sized for a single calibration, storage, or accuracy check.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eAre these sachets reusable?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eNo. They're single-use, designed to be torn open and used once, avoiding contamination risk from a shared bottle.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhich sachet type should I pick if I only calibrate pH?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eIf you only need pH calibration, choose the \u003ca href=\"\/products\/bluelab-ph-40-buffer-low-range-calibration\"\u003epH 4.0\u003c\/a\u003e and \u003ca href=\"\/products\/bluelab-ph-7-buffer-neutral-point-calibration\"\u003epH 7.0\u003c\/a\u003e boxes to cover standard 2-point calibration, or the Mixed box if you also want EC and \u003ca href=\"\/products\/bluelab-kcl-storage-solution-keep-probes-hydrated\"\u003estorage sachets\u003c\/a\u003e on hand.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eAre these sachets good for travel or field use?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\u003cdiv\u003e\u003cp\u003eYes. Their compact, quick tear-open design makes them well suited for calibration or probe storage away from your main setup.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"pH 4.0 Calibration Solution","offer_id":52495762063576,"sku":"PH418B","price":109.0,"currency_code":"USD","in_stock":true},{"title":"pH 7.0 Calibration Solution","offer_id":52495762030808,"sku":"PH718B","price":109.0,"currency_code":"USD","in_stock":true},{"title":"2.77 EC Conductivity Solution","offer_id":52495762096344,"sku":"EC27718B","price":109.0,"currency_code":"USD","in_stock":true},{"title":"KCl Storage Solution","offer_id":52495762129112,"sku":"STSOL18B","price":109.0,"currency_code":"USD","in_stock":true},{"title":"Mixed Solutions","offer_id":52495780675800,"sku":"MIX18B","price":109.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Bluelab_Solution_Sachet_BoxOf30_5.png?v=1789749890"}],"url":"https:\/\/trimleaf.com\/collections\/solutions.oembed","provider":"Trimleaf","version":"1.0","type":"link"}