Comparison of Portable Ph Meters

ProductManufacturerModel No.ParametersOther FeaturesWarrantiesOutputPrice
Hanna Instruments edge­® – Multiparameter MeterHanna InstrumentsHI 2020pH
EC
DO
Rechargeable Battery1 Year5.5” LCD + Dual USB ports--
Hanna Instruments Multiparameter MeterHanna InstrumentsHI 9829 pH
ORP
Conductivity
Turbidity
Temperature
Ions ions Ammonium
Nitrate
Chloride
Fast Tracker™—Tag I.D. System simplifies periodic monitoring1 YearGraphic LCD with backlight + USB PC Connector--