AS 1301.402:2019 PDF
This Standard sets out procedures for the statistical monitoring of the performance of test systems used to determine the properties of paper and paper board where stable reference material is available.
The procedures are not a replacement for calibration of equipment, although the frequency of calibration may be reduced if the monitoring procedures in this Standard indicate the system is stable.
NOTE The procedures described are specific to paper and paper board testing, but some of the principles could be applicable in other industries where the material being tested is other than paper or paper board.