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Bluelab Truncheon Nutrient Meter - PPM / EC / TDS




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Bluelab Truncheon Nutrient Meter: Your Key to Nutrient Optimization

Why Measure Conductivity?

Fueling Plant Growth

Your plants deserve the perfect diet to flourish. Maintaining the right balance of nutrients is the secret to their success. Overfeeding or underfeeding can waste valuable resources and lead to health problems for your plants.

The Power of Conductivity

To track nutrient levels accurately, look no further than conductivity. It measures the total ionic content or dissolved salts in a solution. From a scientific perspective, adding nutrients allows electricity to flow through the solution, increasing electrical conductivity. By mastering this aspect, you ensure that your plants receive the ideal macro- and micro-nutrients for robust health.

The Grower's Nutrient Meter of Choice

A Legacy of Excellence

For decades, growers have trusted and loved the Bluelab Truncheon Nutrient Meter. This tried-and-true conductivity meter is renowned for its reliability and simplicity. It empowers you to measure and fine-tune nutrient levels, unlocking optimal plant performance.

A Growing Companion

While it was designed for daily use, rest assured that the Bluelab Truncheon Nutrient Meter will be your lifelong companion on your gardening journey.

Built for Growers, by Growers

Durability Guaranteed

Our products are born from the hands of growers, crafted with the challenges of everyday growing in mind. The Bluelab Truncheon Nutrient Meter can handle the knocks and drops that are part of your gardening routine. Designed and assembled in New Zealand, it's a testament to quality.

Team Up with the Bluelab pH Pen

Covering All Fundamentals

As a grower, pH (potential Hydrogen) is your fundamental measurement. It dictates nutrient solubility in water, making it accessible to your plants. The Bluelab pH Pen, compact and affordable, is your trusted companion for on-the-go pH and temperature measurement.

The Ultimate Toolkit

Combine the Bluelab pH Pen with the Truncheon Nutrient Meter to measure conductivity, temperature, and pH. This dynamic duo empowers you to actively manage nutrient levels and ensures your plants always have access to the nutrition they crave. Start your journey to healthier, thriving plants today.


  • Measurement range:
    • 0.4 – 6.0 EC, 4 – 60 CF,
    • 200 – 3000 ppm (EC x 500),
    • 280 – 4200 ppm (EC x 700)
  • Resolution:
    • 0.1 EC, 1 CF,
    • 50 ppm (EC x 500)
    • 70 ppm (EC x 700)
  • Accuracy at 25 °C / 77 °F:
    • 0.1 EC, ±1 CF,
    • ±50 ppm (1385 ppm at 500 ppm)
    • ±70 ppm (1939 ppm at 700 ppm)
  • Automatic Temperature Compensation: Yes
  • Operating Environment: 0 – 50 ̊C / 32 – 122 ̊F
  • Calibration: Not required
  • Power Source: 3 x AA alkaline batteries
  • User Manual Languages Available: English
  • Certifications: CE and FCC

In The Box

  • [1] x BlueLab-Truncheon Nutrient Meter
  • Fully waterproof
  • Auto on/off function
  • No calibration required
  • Battery operated
  • No buttons, switches or knobs
  • Provided with EC, CF, ppm 500 and ppm 700 scales
  • Daylight readable blue LED’s

5-Year Replacement

  • Warranty If the product is faulty within the warranty period, the product will be replaced with a new one.
  • Please send the product to the following address on the contact us page.