HM Digital 1000 ppm NaCl Calibration Solution, 20 ml sachets, box of 20 Bio-Fertilizer Contains 2% iron
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Description
HM Digital 1000 ppm NaCl Calibration Solution, 20 ml sachets, box of 20 Bio Fertilizer Contains 2% iron Contains 2% iron KDF85 replacement filters are available for all Hydrologic's reverse osmosis and de chlorinating filters For optimal performance re calibrate your meters periodically with a 20 ml pack of 1000ppm calibration solution