This standard applies to watch oils and establishes a method for determining the increase in viscosity due to oxidation in a thin layer.
GOST 7934.3-1974 Referenced Document
GOST 25336-1982 Laboratory glassware and equipment. Basic parameters and dimensions*, 1982-04-19 Update
GOST 33-2000 Petroleum products. Transparent and opaque liquids. Determination of kinematic viscosity and calculation of dynamic viscosity*, 2024-04-19 Update
GOST 7934.3-1974 history
1974GOST 7934.3-1974 Watch oils. Method for the determination of growing viscosity by oxidation in subtle layer