10 in 1 PH/TDS/EC/SALT/TEMP/S.G/ORP/H2/Fertile/Resistivity Water Quality Monitor Tester for Pools Drinking Water

H2 is in hydrogen 0-2400 PPB S.G sea water specific gravity 1.000-1.222 Temperature 0-60℃ Nutrient solution fertility 0-3 Resistivity 50 ohm -20m ohm Colour: Green Material: Plastic Package Contents: 1 * 10 in 1 Tester (without button battery) Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.