7 In 1 Digital Salinity PH TDS TEMP SG EC ORP Tester Water Quality Monitor MeteR
Accuracy: ±0.05 pH. Range: 0-10000us/cm, 10.01- 19.99mS/cm, 20.1400.0mS/cm (Convert range automaticly). Resolution: 0.01pH. The accuracy within 150ppt is relatively accurate, and the deviation above 160ppt is large.