2. scopeUse the calibration of scales, thermometers, Refractometer, pH meter, clock, as an internal calibration to ensure measuring tools are there, the correct standard.
2. The scope of the calibration scales, thermometers, pH. meter, Refractometer, a clock, an internal calibration to ensure that the measuring equipment. Have a valid standard
2. Scope.Use calibrated scales, thermometer, pH. ,,, meter Refractometer clock. As internal calibration to ensure the measuring instruments and have a full right standard.