GOST 8981-1978 Acetic ether and n-butyl acetate technical. Specifications
ISO 3675:1976 Crude petroleum and liquid petroleum products — Laboratory determination of density or relative density — Hydrometer method
ISO 3838:1983 Crude petroleum and liquid or solid petroleum products; Determination of density or relative density; Capillary-stoppered pyknometer and graduated bicapillary pycnometer methods
GOST 3900-1985 history
2023GOST 3900-2022 Petroleum and petroleum products. Methods for determination of density
1985GOST 3900-1985 Petroleum and petroleum products. Methods for determination of density