Digital microprocessor-based pHmeter, resolution ± 0.1 / 0.01 pH. Large, backlit color graphic display. Manual or automatic temperature compensation with NT 55 probe. Manual and automatic Data Logger function. Memory / recall up to 1000 data with date / time according to GLP. Automatic calibration from 1 to 3 points for pH according to GLP with date and time. Selectable NIST, USA and user definable buffers (2 values). Calibration report and innovative graphic representation. Display of the buffers used for calibration on the display.