BlueLab Truncheon-Free Shipping

MSRP:$195.00  Our Price: $108.88Save: $86.12

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It is essential when growing with a hydroponic solution to KNOW the strength of the solution before feeding your plants AND while they are growing. This is easy when you use the Bluelab Truncheon! To take a reading of your solution, simply place the probe head into the solution for 1-2 minutes to reach the same temperature of your nutrient. Remove from the solution and place back in to take the reading as indicated by the flashing lights. Rinse the probe after use in fresh water and clean once a month to ensure the Truncheon Nutrient Meter remains accurate.


  • EC (0.2 - 3.6), CF (2 - 36), and ppm scales (TDS and 700 scale)
  • Fully waterproof
  • No calibration required
  • Auto sense on and off
  • No external switches or adjustable buttons
  • Battery life minimum 1 year (or shelf life of battery)
  • Model: BLU2000E
  • Shipping Weight: 0.57lbs
  • Brand: Bluelab
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Q: Why are PPM, TDS, pH and EC important?
A: PPM and TDS are abbreviations that represent the concentration of elements in a solution or atmosphere. PPM is short for parts per million and TDS for total dissolved solids. EC (electro conductivity) is another form of measurement for TDS. PH is a measure of acidity or alkalinity which dictates plant uptake of particular elements.

Q: My pH meter doesn't hold calibration. How often should I recalibrate it?
A: pH meters do need to be calibrated by the user every day since the membrane does change and is affected by the temperature as well. If pH values are very critical then it will need to be recalibrated several times a day, or before each sample test (depending on how critical the value is). Uncontaminated calibration solution is very important as well. For each calibration, pour some solution in a separate container. Keep out of sunlight and away from heat.

Q: What is the suggested pH range for my hydroponic system and soil plants?
A: Hydroponic and soil gardens differ in the fact they both need different pH ranges for nutrients to be made available for plant absorption. Maintain a pH between 5.0 and 6.5 for hydroponic gardens and 6.0 to 7.0 for soil applications.
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