Conductivity/TDS/Salinity Tester (1) EC Tester (1) Electrode Replacement for 5030-40 (1) ORP Meter with Dual Display (1) ORP Meter with Single Display (1) pH Meter with Dual Display (1) pH Meter with Single Display (1) pH Tester with ATC (1) pH; Conductivity; TDS; Salt; Temperature Meter (1) pH; ORP; Temperature Meter (1) Salinity Meter with Dual Display (1) Salinity Meter with Single Display (1) TDS Meter with Dual Display (1) TDS Meter with Single Display (1)

0.0-14.0pH (1) 0.0-19.9 mS/cm (1) 0.0-80.0 ppt (1) 0-1000 mg/L (1) 0-14.00 pH (1) 0–1999µS/cm (1) -1000mV-1000mV (1) 2mV (1)