Bluelab Commercial Truncheon Nutrient Meter

Measure High-Strength Nutrient Feeds With Confidence, Up to 6.0 EC

Some growing stages and systems call for nutrient solutions stronger than a standard meter can read. The Commercial Truncheon extends the range to 6.0 EC while keeping the simple, rugged design of the original. Dip it in, and bright LEDs show a temperature-compensated reading.

It suits commercial operations mixing concentrated feeds and experienced growers running high-EC programs. For typical feeding strengths up to 3.6 EC, the standard Truncheon is the lower-range option.

Key Features & Benefits

• Extended range — EC 0.4–6.0, CF 4–60, ppm 500 200–3000 and ppm 700 280–4200.
• No calibration required — ready to use and easy to clean and disinfect.
• Fully waterproof — splash, submerge or drop it in a tank.
• Long-format design — mix and measure reservoirs in one motion.

Who Should Use the Commercial Truncheon

Commercial growers and advanced home growers who run stronger nutrient solutions during certain growth stages. It is built for frequent use across many reservoirs.

About Bluelab Commercial Truncheon

The Commercial Truncheon is the extended-range version of Bluelab's Truncheon. It runs on 3x AA alkaline batteries, reads with ±0.1 EC accuracy at 25°C / 77°F, and carries a 5-year limited warranty. Packaging may vary.

Frequently Asked Questions

How is it different from the standard Truncheon?

The Commercial Truncheon reads up to 6.0 EC, compared with 3.6 EC on the standard model. Its minimum reading is 0.4 EC. Both share the same waterproof, no-calibration design.

When do growers need a higher EC range?

Some systems and growth stages use concentrated feeds that read above 3.6 EC. A meter that tops out below your target cannot confirm your solution. The Commercial Truncheon covers those stronger mixes.

Does it need calibration?

No. The Commercial Truncheon needs no calibration. Keep the sensor clean, and check it against a 2.77 EC standard if you want to confirm accuracy.

Which units can it display?

It reads EC, CF, ppm 500 (TDS) and ppm 700, so you can match the units in your feeding schedule. Readings are temperature compensated.