Check the listing for details. AZ86031 Water Quality Meter Multifunctional PH Tester Dissolved Oxygen Detector. Condition: New. Listed at 405.00 USD. Description AZ86031 Water Quality Meter Multifunctional PH Tester Dissolved Oxygen Conductivity Salinity Detector Specification: PH range: 2.0~12.0 PH accuracy: +/-0.1 PH resolution: 0.1 Cond. range: 0-199.9, 0~1999uSc/m; 0-19.99, 0-69.99mS/cm Cond. accuracy: +/-1% full scale +/-1digit Cond. resolution: 0.1uS/cm, 1uS/cm; 0.01mS/cm.0.01mS/cm Salinity range: 0~10.00ppt; 0~42.0ppt (sea water) Salinity accuracy: +/-1% full scale +/-1 digit Salinity resolution: 0.01ppt, 0.1ppt TDS range: 0~199.9 f, 0-1999*f ppm; 0-19.99*f, 0-150.0*f ppt TDS accuracy: 0.1, 1ppm, 0.01, 0.1ppt/+/-1% F.S+/-1 digit TDS Factor: 0.30~1.00 D.O range: 0.0~199.9% (0.0-30.0mg/L) D.O. accuracy: +/-3% full scale +1 digit D.O resolution: 0.1 Temperature range: 0-60.0℃ Temperature accuracy: +/-0.5℃ Temperature resolution: 0.1 Applicable probe: PH probe/conductivity probe/dissolved oxygen probe LCD size (mm): 32.5 x 54 Operating environment: 0~50℃, RH