Bluelab Truncheon Meter - Features - 1) Robust, reliable and waterproof construction for long lasting value 2) Automatically detects liquids and bright LEDs indicate reading for brilliantly simple functionality 3) Long-format design for mixing and measuring nutrient reservoirs simultaneously 4) No calibration required and easy to clean and disinfect 5) Measure conductivity in EC, CF, PPM 500 (TDS) or PPM 700 |