Portable pH meter and pH Tester range pHTestr 10 Stick Meter pHTestr 10 stick meter:- the instrument that floats! Rugged low cost portable pH instrument that is totally waterproof, if you drop it in your processing tank it will float to the surface. It even features a lug for you to attach a cord to, allowing the you to retrieve the pH Tester stick meter if it starts to floats away from you. The pHTestr 10 features full measuring range of 0 -14.00 pH. PH15-K Portable pH Meter with BNC Connector and ATC PH15-K Portable pH / Redox / Temperature meter kit with digital display and ranges of:- 0 - 14.00 pH for pH Measurement 0 - 1999 mV for Redox Measurement or -50 to 150oC for Temperature Measurement Fitted with automatic temperature compensation on the pH range. Supplied with 9005 - 3B epoxy bodied pH electrode, stainless steel temperature sensor and carrying case. PC18-K Portable pH and Conductivity Meter PC18-K Portable Combination meter selectable for pH, Temperature and Conductivity. Ranges:- 0 - 14.00 for pH Measurement -50 to +150oC for Temperature Measurement 0 - 200 µS, 0 - 2000 µS or 0 - 20.00 mS for conductivity measurement with ATC. Supplied with pH electrode, k = 1.0 conductivity cell with ATC, stainless steel temperature sensor and carrying case.