This standard describes a method for the empirical estimation of the consistency of waxes derived from petroleum by measurement of the extent of penetration of a standard needle. This method is applicable to waxes having a penetration of not greater than 250.
IS 1448 Pt.93-1979 history
1980IS 1448 Pt.93-1979 Test methods for petroleum and its products [P: 93] Penetration of petroleum waxes