pH/Conductivity Kit, pH Range 0.00 to 14.00, Electric Conductivity Range 0 to 19.99 mS/cm, TDS Range 0 to 99.9 ppm, 1.00 to 9.99 ppt, 100 to 999 ppm, Waterproof Yes, Automatic Temperature Compensation Yes, Displayed Temperature Range 0 Degrees to 65...