Clean PH500 pH / mV meter has LCD display with high luminant backlight, mg/L or % unit display, up to 3 points auto-buffer-recognition, zero offset, one key to check through all the settings, 150 data sets memory stores and recalls, auto power off saves battery after 10-mins non-use, detachable electrode stand organizes multiple electrodes neatly, easy installing, occupy less place, simple operation, 140 x 210 x 35 mm dimensions, 630 gm weight.