Bluelab Commercial Truncheon MeterWith a conductivity range right up to 6. 0 EC (60 CF, 3000 ppm x 500 and 4200 ppm x 700), it will never leave you short. The Commercial Truncheon Nutrient Meter has been designed for hydroponic crops that require a higher than normal EC or ppm requirement during their growing cycle. It is super tough, fully waterproof, has no on off buttons to worry about and does not need calibrating. EC (0. 4 6. 0), CF (4 60) and ppm scales (TDS and 700 scale). Auto
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