1. J

    DWC Nutrient Testing

    We buy and use a lot of test meters and chemical test strips and do a lot of testing, I.E. pH, Electrical Conductivity, Nitrate-N, Phosphorus, Potassium, Sulphur, Calcium, Magnesium, Sodium, Iron, Manganese, Zinc, Copper, Boron and Chloride to name a few popular test. All these expensive...