... both pH & temp.2. Pen type digital pH meter, all in one, pH electrode included, easy to use9. Data hold function for ... laboratory, quality control, school & colleges, swimming pools, water conditions.7. Three point calibration for pH 4.01, pH 6.86 and ... CalibrationpH 4.01, pH 6.86 and pH 9.18, Three Point CalibrationTemp. Display0.1oCTemp. Accuracy1oCWorking Temp. Range0 ~ 50oCATC0 ~ 100oCDimension188 ...