7 In 1 PH EC Conductivity TDS Salinity ORP SG Blue Tooth Meter Tester Measures.
Suitable for household drinking water, hydroponics, lab, aquarium. It can be used as a classic tester even if it is not connected to a smartphone. Salinity Range: 0-10000ppm, 10.1-200.0ppt, 0.01%-25.00%.