GOST 9147-1980 Laboratory porcelain ware and apparatus. Specifications
GOST OIML R 76-1-2011 State system for ensuring the uniformity of measurements. Non-automatic weighing instruments. Part 1. Metrological and technical requirements. Tests
GOST R ISO 5725-6-2002 Accuracy (trueness and precision) of measurement methods and results. Part 6. Use in practice of accuracy values
GOST 24596.4-2015 history
2015GOST 24596.4-2015 Feed phosphates. Method for determination of calcium
1981GOST 24596.4-1981 Feed phosphates. Methods for determination of calcium