WD-35613-81 Eutech Ion6+ is a rugged, economical meter that is very easy to use. Features include all push-button calibration, hold function,auto-off, and splash-resistant keypad. Read concentration in ppm and mV as well as pH and temperature in °C. The included protective rubber boot also acts as a meter stand for benchtop use. Order ISE electrodes separately. Has been certified with NIST-Traceable calibration from INNOCAL.