Portable PH / ORP meter / portable PH meter Model: HA-AD18-MP6100 microcomputer design, simple large liquid crystal display, a portable audio feedback automatic key contour correction, automatic power off function to automatically identify the automatic temperature compensation standard solution stability, precise, anti interference is strong, and the chip components imported pH measuring range, resolution 0.00 ~ 14.00pH; 0.01pH mV measurement range, resolution -1000 ~ 1000mV; 1mV temperature range, resolution 0.0 ~ 60.0 ℃; 0.1 ℃ accuracy class approved standard solution 0.02 4.00 / 7.00 / 10.01; 4.01 / 6.86 / 9.18 0.0 ~ 99.9 ℃ automatic temperature compensation 9V battery power with 220V power line dimensions 220 × 130 × 35mm / 325g weight 0.29kg application: sewage treatment, generation , aquaculture, schools, pharmaceutical factories, hospitals, fermentation, chemicals, tap water, etc.