GOST 9147-1980 Laboratory porcelain ware and apparatus. Specifications*, 2024-04-17 Update
GOST 9736-1991 Electric apparatus of direct transformation for measuring non-electrical values. General technical requirements and methods of tests*, 2024-04-17 Update
GOST 30502-1997 history
1997GOST 30502-1997 Fodders, mixed fodders and mixed fodder raw materials. Atomic absorption method for determination of magnesium content