Blue Lab Commercial Truncheon PPM / EC / CF Meter Review

I've used this meter for 4 years with no trouble. I would not grow without it.

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Product Description:
Gardeners can easily measure and maintain nutrient strength levels with the waterproof Truncheon from Bluelab. Truncheon reads in EC (0.2-3.6), CF (2-36), and TDS in both 500 and 700 ppm scales. Accurate within ± 4% of reading with a resolution of .1 EC, the Truncheon runs on three AA alkaline batteries

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