7 In 1 Digital Water Quality Tester Pen EC PH Salinity Temp Meter/Detector UK
Salinity 0-20%. The specific gravity of S.G seawater is 1.000-1.222. EC value 0-200000㎲/cm. 1x 7 In 1 Tester Pen. PH value 0-14. Built-in high-sensitivity electrode head, high-sensitivity glass electrode, rust-proof platinum electrode.