{"product_id":"bluelab-combo-meter-replaceable-ph-ec-probes-portable","title":"Bluelab Combo Meter - Portable 3-in-1 pH, EC \u0026 Temp Meter","description":"\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch2\u003eBluelab Combo Meter - Portable 3-in-1 pH, EC \u0026amp; Temp Meter\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cp\u003eCarrying separate pH and EC meters into the field means extra gear, extra batteries, and readings that never line up in time. The Bluelab Combo Meter solves this with a single, portable 3-in-1 unit that measures pH, conductivity (EC), and temperature in nutrient reservoirs, run-off, and water supply. If you prefer a more compact, Bluetooth-enabled alternative, the \u003ca href=\"\/products\/bluelab-onepen-ph-ec-temp-meter-bluetooth-connected\"\u003eBluelab OnePen\u003c\/a\u003e offers similar 3-in-1 functionality in a pocket-sized format.\u003c\/p\u003e\n\u003cp\u003eIndividual, replaceable probes give the Combo Meter lasting value: a \u003ca href=\"\/products\/bluelab-ph-probe-double-junction-bnc-connector\"\u003eBNC-connection pH probe\u003c\/a\u003e you can swap without replacing the whole meter, and a factory-calibrated EC probe that's ready to use immediately. A \u003ca href=\"\/products\/bluelab-kcl-storage-solution-keep-probes-hydrated\"\u003eKCl-filled pH probe cap\u003c\/a\u003e keeps the probe hydrated between uses, and 2-metre (6.6ft) cables let you take readings in hard-to-reach reservoirs and tanks. For those measuring directly in substrate, the \u003ca href=\"\/products\/bluelab-combo-meter-soil-ph-probe-ec-temp-on-the-go\"\u003eBluelab Combo Meter with Soil pH Probe\u003c\/a\u003e offers specialized functionality for media-based testing.\u003c\/p\u003e\n\u003cp\u003eDay-to-day use stays simple: a clear backlit display and easy-to-use buttons make readings fast to check, and 2-point pH calibration with a 30-day reminder keeps accuracy on track. Battery-powered and portable, the Combo Meter goes wherever your grow operation does.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cstyle\u003e\n  .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;}\n  .feature-card{background-color:transparent;padding:1.5rem;border-radius:8px;text-align:center;flex:0 1 240px;box-sizing:border-box;}\n\u003c\/style\u003e\n\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\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eReplaceable pH Probe\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eA \u003ca href=\"\/products\/bluelab-ph-probe-double-junction-bnc-connector\"\u003eBNC-connection probe\u003c\/a\u003e swaps out without replacing the entire meter.\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\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eFactory-Calibrated EC Probe\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eReady to use immediately, right out of the box.\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\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eHydrated Probe Cap\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eThe \u003ca href=\"\/products\/bluelab-kcl-storage-solution-keep-probes-hydrated\"\u003eKCl-filled pH probe cap\u003c\/a\u003e keeps the probe hydrated 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\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003e2m \/ 6.6ft Probe Cables\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eReach measurements in hard-to-access reservoirs and tanks.\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\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eQuick 2-Point Calibration\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eBuilt-in 30-day reminder keeps pH readings accurate over time.\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\n\u003ch5 style=\"font-size: 1.1em; font-weight: bold; color: #333; margin: 0.75rem 0 0.5rem 0;\"\u003eBacklit Display\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eClear screen and easy-to-use buttons make readings fast to check.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBluelab Combo Meter with Conductivity \/ Temperature Probe\u003c\/li\u003e\n\u003cli\u003eBluelab pH Probe\u003c\/li\u003e\n\u003cli\u003eBluelab pH Probe Holder with Suction Cup\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bluelab-ph-7-buffer-neutral-point-calibration\"\u003eBluelab pH 7.0 Calibration Solution\u003c\/a\u003e (18ml \/ 0.6fl oz, single-use)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bluelab-ph-40-buffer-low-range-calibration\"\u003eBluelab pH 4.0 Calibration Solution\u003c\/a\u003e (18ml \/ 0.6fl oz, single-use)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bluelab-kcl-storage-solution-keep-probes-hydrated\"\u003eBluelab KCl Storage Solution\u003c\/a\u003e (18ml \/ 0.6fl oz)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 style=\"margin-bottom: 0;\"\u003eSpecifications\u003c\/h4\u003e\n\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\n\u003cdiv class=\"styled-spec-container\"\u003e\n\u003ctable class=\"styled-spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Range\u003c\/td\u003e\n\u003ctd\u003e0.0–14.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Resolution\u003c\/td\u003e\n\u003ctd\u003e0.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH Accuracy (at 25°C \/ 77°F)\u003c\/td\u003e\n\u003ctd\u003e±0.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e32–122°F (0–50°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Resolution\u003c\/td\u003e\n\u003ctd\u003e1°C \/ 1°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1°C \/ ±2°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductivity (EC) Range\u003c\/td\u003e\n\u003ctd\u003e0.0–9.9 mS\/cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductivity (EC) Resolution\u003c\/td\u003e\n\u003ctd\u003e0.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductivity (EC) Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCF Range\u003c\/td\u003e\n\u003ctd\u003e0.0–99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCF Resolution\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCF Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTDS (ppm 500) Range\u003c\/td\u003e\n\u003ctd\u003e0–4,950\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTDS (ppm 500) Resolution\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTDS (ppm 500) Accuracy\u003c\/td\u003e\n\u003ctd\u003e±50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eppm 700 Range\u003c\/td\u003e\n\u003ctd\u003e0–6,930\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eppm 700 Resolution\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eppm 700 Accuracy\u003c\/td\u003e\n\u003ctd\u003e±70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Environment\u003c\/td\u003e\n\u003ctd\u003eNutrient solution, 32–122°F (0–50°C) — do not use or store outside this range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e2x AAA alkaline battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch4\u003eSupport \u0026amp; Manuals\u003c\/h4\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 15px;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Bluelab_Combo_Meter_Manual.pdf?v=1789578788\" rel=\"noopener noreferrer\" style=\"display: inline-flex; align-items: center; background-color: #f7f7f7; border: 1px solid #ddd; border-radius: 8px; padding: 12px 18px; text-decoration: none; color: #333; transition: background-color 0.3s ease, box-shadow 0.3s ease;\" target=\"_blank\"\u003e \u003cspan style=\"font-size: 1.5em; margin-right: 12px;\"\u003e📄\u003c\/span\u003e \u003cspan style=\"font-weight: bold;\"\u003eCombo Meter Manual\u003c\/span\u003e \u003c\/a\u003e\u003c\/div\u003e\n\u003ch4\u003eWarranty\u003c\/h4\u003e\n\u003cp\u003eThe Bluelab Combo Meter is covered by a 5-year limited warranty.\u003c\/p\u003e\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cdiv class=\"faq-container\"\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eIs the pH probe on the Combo Meter replaceable?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eYes. It uses a \u003ca href=\"\/products\/bluelab-ph-probe-double-junction-bnc-connector\"\u003eBNC-connection pH probe\u003c\/a\u003e that can be swapped out without replacing the entire meter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eDoes the EC probe need calibration?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eNo. The conductivity probe is factory-calibrated and ready to use immediately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eWhat conductivity scales does the Combo Meter support?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eIt measures in EC, CF, ppm 500 (TDS), or ppm 700, so you can work in whichever scale your feeding program uses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eHow far can I reach with the Combo Meter's cables?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe probes have 2-metre (6.6ft) cables, letting you take readings in reservoirs and tanks that are hard to access directly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eCan I use the Combo Meter outside of hydroponic reservoirs?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eYes. It's built to measure pH, EC, and temperature in nutrient reservoirs, run-off, and general water supply, and is portable enough to use on the go.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003e\n\u003cspan\u003eHow do I keep the pH probe in good condition between uses?\u003c\/span\u003e \u003cspan class=\"faq-icon\"\u003e+\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-answer\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe pH probe comes with a cap that should be filled with \u003ca href=\"\/products\/bluelab-kcl-storage-solution-keep-probes-hydrated\"\u003eBluelab KCl storage solution\u003c\/a\u003e to keep it hydrated when not in use, helping extend its accuracy and lifespan.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bluelab","offers":[{"title":"Default Title","offer_id":52473289638104,"sku":"METCOM","price":319.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Bluelab_Combo_Meter_1.webp?v=1789578929","url":"https:\/\/trimleaf.com\/products\/bluelab-combo-meter-replaceable-ph-ec-probes-portable","provider":"Trimleaf","version":"1.0","type":"link"}