An all-in-one Electrode and Amplifier pH Meter with replaceable electrodes. Easy to use, battery operated, with simple two-point calibration, the meter has a resolution and accuracy of 0.01 pH. The pH range is 1 to 13. A built-in temperature sensor and microcircuitry compensate the temperature automatically from 0 to 70°C, ensuring optimum accuracy of all pH measurements. Since the epoxy body pH electrode has a built-in Amplifier, these meters can easily work in all types of environments without being affected by noise, dirt or humidity. Cat. No. 638-500-06 has an additional °C temperature display. All meters are supplied with pH 4 and 7 buffer solutions and a rugged carrying case. Warranty: 6 months.