Bluelab Truncheon Nutrient Meter

In stock
USD $99.00
+ -

Impossibly tough, an EC meter built to last a lifetime   

  • Measure up to 3.6 EC, 36 CF, 1800 ppm 500 or 2520 ppm 700
  • Robust and reliable construction for long-lasting value
  • Fully waterproof; splash, submerge or sink - we've got you covered
  • Automatically detects liquids and bright LEDS indicate measurement for brilliantly simple functionality
  • Long-format design for mixing and measuring nutrient reservoirs simultaneously
  • No calibration required and easy to clean and disinfect
  • All conductivity scales included – EC, CF, PPM 500 (TDS), PPM 700
  • Industry-leading five-year warranty for peace of mind
  • Packaging may vary 

Why measure conductivity?

Optimise nutrient levels

All plants need access to the correct amount of food (nutrients) so that they can grow and flourish. Over- or under-feeding your plants can result in the waste of expensive nutrient resources and plant health issues.

The simplest way to keep track of the amount of nutrients in your solution is to measure conductivity, which refers to the total ionic content (dissolved salts) in a solution. From a scientific perspective, when nutrients are added, this creates the potential for electricity to move through a solution, increasing the electrical conductivity.

By measuring and adjusting nutrient levels, you’ll ensure that your plants are getting the macro- and micro-nutrients they need for superior plant health.

The grower’s nutrient meter of choice

Robust design that’s built to last

Tried, tested and loved by growers for decades, the Bluelab Truncheon Nutrient Meter is renowned as the best conductivity meter for measuring solution. This brilliantly simple, bullet-proof nutrient meter allows you to measure and adjust nutrient levels for optimal plant performance.

The Bluelab Truncheon Nutrient Meter may have been designed for everyday use, but we guarantee that it’ll become your growing companion for life.

Built for growers

All our products are designed with growers, for growers - so you can be confident that the Bluelab Truncheon Nutrient Meter can withstand the knocks and drops that come with everyday growing. Designed and assembled in New Zealand from local and imported components.

Team up with the Bluelab pH Pen

Cover all the plant health fundamentals

As a grower, your solution’s pH (potential Hydrogen) is the most critical fundamental measurement to track. It plays a crucial role in making nutrients soluble in water so that they can be accessed by your plants.

The Bluelab pH Pen is an affordable and compact handheld solution for measuring pH and temperature on the go.

When you combine this pen with Bluelab’s Truncheon Nutrient Meter, you’ll be able to measure conductivity, temperature and pH, which not only enables you to actively manage your nutrient levels but also ensures that your plants have access to the food they need. Start tracking the fundamentals today.

More Information
Technical Specification

Automatic Temperature Compensation: Yes
Operating Environment: 0 – 50 ̊C / 32 – 122 ̊F
Measurement Resolution: 0.1 EC, 1 CF, 50 ppm 500(TDS), 70 ppm 700 (ppm x 700)
Measurement Range: 0.2 – 3.6 EC, 2 – 36 CF, 100 – 1800 ppm 500(TDS), 140 – 2520 ppm (ppm 700)
Measurement Accuracy: ± 0.1 EC, ± 1 CF, ± 50 ppm (1385 ppm at 500 ppm), ± 70 ppm (1939 ppm at 700 ppm)
Calibration: No calibration required
Power: 3 x AA alkaline batteries
CE Compliance: Yes
FCC Compliance: Yes
RoHS Compliance: Yes 
Other specifications:
Warranty: 5-YEARS
Country of Origin: New Zealand

More Product Information

TRUNV2 User Manual - English

TRUNV2 User Manual - German Deutsch

TRUNV2 User Manual - Spanish

TRUNV2 User Manual - Dutch

TRUNV2 User Manual - Canadian French

Product Warranty Period Details


Comes with a 5-year limited written warranty. Proof of purchase required. For full terms and conditions visit