10 in 1 Water Quality Tester PH/TDS/EC/SALT/TEMP/S.G/ORP/H2/Fertile/Resistivity Tester Pen For Aquarium Swimming Pool ,Easy Reading - WITH BACKLIGHT_X

Organic matter and microorganism in reaction water. The lower the oxidation-reduction potential (ORP), the higher the oxygen consuming organics (harmful components) (aerobic bacteria will be very active) and the dirtier the water quality. After disinfection of swimming pool, ORP value 2+650 is qualified, and the lower the anion water is, the better. Measuring range: 0-200000us/cmCvalue, also known as conductivity, is used toreflect the conductivity of total ions in water It is mainly used to detect the EC Value ofagricultural irrigation and liquid fertilizer Experiments show that:Hydrogen and water can delay the oxidationreaction to a certain extent