Demulsibility/Water Separability

ASTM D1401: This test measures the ability of a lubricant to separate from water. New turbine oils are designed to have good water separability characteristics. Polar contaminants influence turbine oil’s ability to separate from water. This is particularly crucial to steam turbine applications where water contamination is most prevalent and separation in the reservoir is essential. Contamination control technologies such as oil/water coalescers also depend on turbine oil’s water separability characteristics to function properly.