D971 Standard Test Method for Interfacial Tension of Oil Against Water by the Ring Method

2. Referenced Documents

D117 Guide to Test Methods and Specifications for Electrical Insulating Oils of Petroleum Origin
D923 Test Method for Sampling Electrical Insulating Liquids
D2285 Test Method for Interfacial Tension of Electrical Insulating Oils of Petroleum Origin Against Water by the Drop-Weight Method