Bluelab Truncheon Nutrient Meter – The Industry Standard EC, CF & PPM Meter
The original and industry-standard nutrient meter, trusted by growers worldwide for accurate and reliable readings. The Bluelab Truncheon Nutrient Meter (SKU: TRUNV2) makes nutrient monitoring effortless — simply dip it in, and flashing LEDs provide precise readings automatically adjusted for temperature. No calibration. No buttons. No complexity. Just accurate EC, CF, PPM 500, and PPM 700 readings every time.
Built tough and fully waterproof, the Truncheon’s long-format design lets you stir and measure your nutrient reservoir simultaneously. Tried, tested, and loved by growers for decades. Made in New Zealand by Bluelab.
Key Features
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No Calibration Required — Ever — factory-set and maintains accuracy without any user calibration; dip and read, every time
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Reads EC, CF, PPM 500 & PPM 700 — covers all major conductivity measurement scales used by growers worldwide
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Automatic Temperature Compensation (ATC) — flashing LEDs deliver readings automatically adjusted for solution temperature
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Fully Waterproof Construction — robust housing built for daily submersion in wet growing environments
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Long-Format Design — ergonomic long body lets you mix and measure nutrient reservoirs simultaneously
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Automatic Liquid Detection — bright LEDs activate automatically when dipped; no buttons, no switches
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Easy to Clean & Disinfect — simple maintenance keeps the Truncheon performing accurately for years
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Measurement Range: 0.2–3.6 EC (standard) — also available as Commercial Truncheon (0–6 EC) for high-strength solutions
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Made in New Zealand — decades of proven performance in commercial and home growing operations worldwide
Why EC Measurement Matters
All plants need the right amount of nutrients to grow and flourish. Over- or under-feeding wastes expensive nutrient resources and causes plant health issues. Electrical conductivity (EC) measures the total ionic content (dissolved salts) in your solution — the most reliable indicator of nutrient concentration. By regularly measuring and adjusting EC, you ensure your plants get the macro- and micro-nutrients they need for superior health and yield.
Ideal For
- Hydroponics & indoor growing nutrient management
- Aquaponics & aquaculture systems
- Greenhouse & commercial growing operations
- Cannabis cultivation & nutrient monitoring
- Coco coir, NFT, DWC & recirculating systems
- Home growers & professional cultivators alike
Technical Specifications
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SKU: TRUNV2
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Measurement Range: 0.2–3.6 EC | 2–36 CF | 100–1800 PPM 500 | 140–2520 PPM 700
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Temperature Compensation: Automatic (ATC)
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Calibration: None required
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Housing: Fully waterproof
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Display: Bright LED scale
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Country of Origin: New Zealand
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Weight: 15 oz
Also Available
Bluelab Commercial Truncheon Nutrient Meter — extended range (0–6 EC) for high-strength commercial nutrient solutions.
Pro tip: Pair the Bluelab Truncheon with a Bluelab pH Pen or Combo Meter for complete nutrient solution management — covering both conductivity and pH in one workflow.
