Industrial purity. Lubricating and cooling fluids. Requirements for purity of cutting fluids at external cylindrical grinding and surface grinding with the periphery of the wheel
Test methods specific to filling compounds of electric cables. Drop-point. Separation of oil. Lower temperature brittleness. Total acid number. Absence of corrosive components. Permittivity at temperature 23 C. D.c. resistivity at temperature 23 C and 100 C
