Desk-top pH meters-SERIES 600: PH-610 PH-620 PH-640 PH-660 Desk-top pH meters-SERIES 600Highlights: 1. Auto/man pH Temperature compensation2. pH temperature compensation ... , temperature, MTC/ATCSensor Data Saving Content (GLP) Sensor calibration date, time, calibration method, pH buffer temperature, TC method, sensor zero point, slopeAuto Saving ...