Benchtop Water-Quality Multiparameter Meter (pH, ORP, Conductivity, TDS, Salinity, Resistivity)

Worth knowing before you order

Supplied with a pH electrode, a K = 1 conductivity cell, buffers 4.01, 7.00 and 10.01, a calibration solution and an ATC probe; no ORP electrode is listed, so the ORP channel needs a redox electrode bought separately. Salinity, TDS and resistivity are all derived from the conductivity reading, which means the cell constant governs five of the six parameters: pick K = 0.1 for high-purity water, K = 1 for general samples, K = 10 for brines. The cell-constant row prints '0.0 / 1 / 10', and 0.0 cannot be a cell constant — the equivalent model in the same catalogue prints '0.1 / 1 / 10', so treat the low option as K = 0.1 and confirm it before ordering a second cell. Both pH and conductivity electrodes are consumables with a service life.