... after 10 mins* Supplied with a set of pH 4.01, pH 6.86, pH 9.18 buffers*Microcomputer circuit, intelligent function, ... colleges, swimming pools, water conditions* Auto calibration for pH 4.01, pH 6.86 and pH 9.18Specifications SpecificationsParametersMeasurement RangepH0.00 ~ 14.00 ... 1oC/ 0.1oFNo. of pH Calibration PointsUp to 3 points: pH 4.01, pH 6.86 and pH 9.18Temperature CompensationAutomatic; 0~ ...