Bluelab Truncheon Nutrient Meter – EC, CF & PPM | No Calibration Needed

The Last EC Meter You'll Ever Buy.

The Bluelab Truncheon Nutrient Meter is the go-to tool for growers who want to know exactly what's in their nutrient solution — without fuss, without calibration, and without ever worrying about it breaking. Trusted by growers for decades, this thing is built to last a lifetime.

Just dip it in. The Truncheon auto-detects liquid and bright LEDs instantly show your reading. That's it. No buttons. No menus. No calibration. Just fast, accurate results every single time.

Why Growers Keep Coming Back to the Truncheon

• ✅ No calibration ever — dip it in and read it, simple as that
• ✅ Fully waterproof — splash it, submerge it, drop it in the res. It's fine.
• ✅ Auto-detects liquid — bright LEDs light up the moment it touches solution
• ✅ All 4 conductivity scales — EC, CF, PPM 500 (TDS) & PPM 700 in one unit
• ✅ Long-format design — mix and measure your reservoir at the same time
• ✅ Easy to clean — rinse and go, no fiddly parts
• ✅ Industry-leading 5-year warranty — Bluelab backs it for the long haul
• ✅ Robust construction — built for daily use in tough grow environments

Why Nutrient Levels Matter

Every plant needs the right amount of food to grow well. Too much and you risk burning your roots. Too little and growth slows right down. The Truncheon measures the electrical conductivity (EC) of your solution — a fast, reliable way to know exactly how much nutrient is in the water. Get it right and your plants will thank you.

Pair It With the Bluelab pH Pen

For complete nutrient management, combine the Truncheon with the Bluelab pH Pen. Together they cover EC, temperature and pH — the three numbers that matter most for healthy, happy plants. Once you have all three dialled in, you're growing with confidence.

Specs at a Glance

• 📏 Conductivity scales: EC, CF, PPM 500 (TDS), PPM 700
• 💧 Waterproof: fully submersible
• 🔋 Power: battery powered
• 🛡️ Warranty: 5 years (industry leading)
• ⚖️ Weight: 0.6 kg
• 📦 Note: Packaging may vary

The Bluelab Truncheon Nutrient Meter — simple, bulletproof, and built to be your growing companion for life.