GOST 7328-1982 Weights of general application. Specifications
GOST 27749.0-1988 history
2013GOST 32467-2013 Urea for industrial use. Determination of nitrogen content. Titrimetric method after distillation
1988GOST 27749.0-1988 Carbamid. Method of nitrogen content determination
GOST 27749.0-1988 Carbamid. Method of nitrogen content determination was changed to GOST 32467-2013 Urea for industrial use. Determination of nitrogen content. Titrimetric method after distillation.