Direct readout of ion concentration at economical prices Works with almost all ion selective electrodes with BNC connectors Reads ion concentration (ppm) pH, mV, and temperature Preprogrammed ion calibration points let even beginners take readings in minutes Hold function; Auto-offThese rugged, economical meters are very easy to use. Features include all push-button calibration, hold function,auto-off, and splash-resistantkeypad. Read concentration in ppm and mV as well as pH and temperature in ºC. The included protective rubber boot also acts as a meter stand for benchtop use. Order ISE electrodes separately.