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General Application Rate: 1-5 ml per gallon of water or nutrient solution
pets or food because its constituents are organic
resolution is 0
In these uncertain times of tribulation
HM Digital Replacement pH Sensor for PH-200 commercial-lighting-fixtures General Application Rate: 1-5 mlThis spare pH sensor is for HM Digital Waterproof pH Meter model P 200. Features glass pH sensor and reference tube and thermister.
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