【TBT】DUS 2064:2018 Standard Test Method for Multielement Determination of Used and Unused Lubricating Oils and Base Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES), First Edition.
【TBT】DUS 2056:2018 Standard Test Method for Apparent Viscosity of Engine Oils and Base Stocks Between –10°C and –35°C Using Cold-Cranking Simulator, First Edition.