... in 20 mins.* Provided with pH 4.01, pH 7.00, pH 10.01 buffer.* Microcomputer circuit, intelligent function, high ... for pH 4.01, pH 7.00 and pH 10.01.SPECIFICATIONS:Display LCD, size : 20 mm x 27 mm. ... .pH Calibration pH 7.00, pH 4.01 or pH 10.01, 3 points calibration.Operating Humidity Less than ... 80% RHDimension 188 x 38 mm * Meter with pH ...