8 in 1 Water Quality Tester Meter Pen PH/ORP/EC/TEMP/SALT/S.G/TDS/H2 Backlight
Help the salt chlorinator work more efficiently in the appropriate salinity value. H2 Hydrogen. Check the salt concentration of saltwater pool & hot tub that use salt chlorine generator. Test the pH level of pool- pH: 0.00-14.00.