D1275-96a
Standard Test Method for Corrosive Sulfur in Electrical Insulating Oils

1.1 This test method covers the detection of corrosive sulfur compounds in electrical insulating oils of petroleum origin.

1.2 Mineral insulating oils may contain substances that cause corrosion under certain conditions of use. This test method is designed to detect the presence of free sulfur and corrosive sulfur compounds by subjecting copper to contact with oil under prescribed conditions.

Note:    This test procedure provided information with respect to the fluid condition.

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