{"product_id":"bluelab-truncheon-meter-ec-cf-ppm-no-calibration","title":"Bluelab Truncheon Nutrient Meter (0.2–3.6 EC)","description":"\u003ch4\u003e\u003cbr\u003e\u003c\/h4\u003e\n\u003ch2\u003eBluelab Truncheon Nutrient Meter \u003cspan\u003e(0.2–3.6 EC)\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cp\u003eTraditional conductivity meters mean regular calibration checks before every use — time growers stirring nutrient reservoirs don't have. While the \u003ca href=\"\/products\/bluelab-conductivity-pen-ec-temp-reader-ready-to-use\"\u003eBluelab Conductivity Pen\u003c\/a\u003e offers a compact alternative, the Bluelab Truncheon Nutrient Meter skips the calibration step entirely: dip it into solution and read CF, EC, PPM 500, or PPM 700 instantly, with automatic temperature compensation built in.\u003c\/p\u003e\n\u003cp\u003eBuilt tough and fully waterproof, the Truncheon's long-format design lets it double as a stirring tool while you mix and measure a reservoir at the same time. Automatic liquid detection triggers bright LED readouts, and its simple, no-calibration operation makes it easy to clean, disinfect, and hand off between grow rooms without downtime.\u003c\/p\u003e\n\u003cp\u003eAs the original industry-standard nutrient meter, the Truncheon has earned its reputation for reliability that holds up to constant use. For those running high-strength nutrient programs, the \u003ca href=\"\/products\/bluelab-commercial-truncheon-ec-up-to-6\"\u003eBluelab Commercial Truncheon Nutrient Meter\u003c\/a\u003e provides an expanded range up to 6.0 EC. There's no probe to swap, no solution to store, and no setup routine to walk new staff through — just a durable meter that delivers a consistent reading every time it touches solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; margin: 20px 0; border-radius: 8px;\"\u003e\u003ciframe loading=\"lazy\" style=\"position: absolute; top: 0; left: 0; width: 100%; height: 100%;\" src=\"https:\/\/www.youtube.com\/embed\/GUTyR8Qv2CI?autoplay=1\u0026amp;mute=1\u0026amp;playsinline=1\u0026amp;loop=1\u0026amp;playlist=GUTyR8Qv2CI\u0026amp;controls=0\u0026amp;rel=0\"\u003e\u003c\/iframe\u003e\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;\"\u003eRugged Waterproof Build\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eRobust, reliable construction stands up to daily reservoir use for the long haul.\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;\"\u003eAutomatic Liquid Detection\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eBright LEDs indicate readings automatically for simple, glanceable results.\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;\"\u003eLong-Format Design\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eDoubles as a stir stick, so you can mix and measure your reservoir at once.\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;\"\u003eNo Calibration Required\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eSkip the setup — easy to clean and disinfect 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;\"\u003eMulti-Scale Readings\u003c\/h5\u003e\n\u003cp style=\"font-size: 0.95em; line-height: 1.6; color: #555; margin: 0;\"\u003eMeasures conductivity in EC, CF, PPM 500 (TDS), or PPM 700.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\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\u003eConductivity (EC) Range\u003c\/td\u003e\n\u003ctd\u003e0.2–3.6 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\u003e2–36\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTDS (ppm 500) Range\u003c\/td\u003e\n\u003ctd\u003e100–1,800\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTDS (ppm 500) Resolution\u003c\/td\u003e\n\u003ctd\u003e50\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\u003e140–2,520\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eppm 700 Resolution\u003c\/td\u003e\n\u003ctd\u003e70\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\u003e3x AA 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_Truncheon_Nutrient_Meter_Manual.pdf?v=1789577303\" 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;\"\u003eTruncheon Nutrient Meter Manual\u003c\/span\u003e \u003c\/a\u003e\u003c\/div\u003e\n\u003ch4\u003eWarranty\u003c\/h4\u003e\n\u003cp\u003eThe Bluelab Truncheon Nutrient 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\u003eDoes the Truncheon 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 Truncheon requires no calibration — simply dip it into your nutrient solution and read the result directly off the LED display. You can periodically verify your tool's accuracy using \u003ca href=\"\/products\/bluelab-277-ec-standard-solution-verify-ec-accuracy\"\u003eBluelab 2.77 EC Conductivity Standard Solution\u003c\/a\u003e.\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 can the Truncheon measure?\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 reads nutrient concentration in EC, CF, PPM 500 (TDS), or PPM 700. For growers who also need to monitor acidity, pairing this with a \u003ca href=\"\/products\/bluelab-ph-pen-compact-ph-temp-reader-floats\"\u003eBluelab pH Pen\u003c\/a\u003e ensures all critical water parameters are covered.\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\u003eIs the Truncheon waterproof?\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 with a fully waterproof, rugged housing designed for repeated dunking and daily reservoir use.\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 reading adjust for temperature automatically?\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. Readings are automatically compensated for temperature, so you get an accurate result without a separate correction step.\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 Truncheon to stir my reservoir while measuring?\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. Its long-format design lets you mix and measure your nutrient solution at the same time.\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 battery does the Truncheon use?\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 runs on 3x AA alkaline batteries.\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":52473235112152,"sku":"TRUNV2","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1383\/1731\/files\/Bluelab_Truncheon_Nutrient_Meter_1_c0ac5eed-3688-4313-a219-842f591b0571.png?v=1789577820","url":"https:\/\/trimleaf.com\/products\/bluelab-truncheon-meter-ec-cf-ppm-no-calibration","provider":"Trimleaf","version":"1.0","type":"link"}