Description
Hanna HI735 25 Total Hardness Reagents Low Range 0 350 ppm for HI735 Checker HC 25 Tests Hydroponics pH Meter With its ability to ensure SP6 GR double junction ORP probe Built to last with With its ability to ensure the safety and cleanliness of your drinking water KDF media uses a redox (oxidation reduction) reaction to remove heavy metals and inhibit bacterial growth