ASTM D128

Analysis of Lubricating Grease

Applicability: ASTM D128 outlines a series of standard test methods for the analysis of lubricating grease. These methods are designed to determine various constituents within the grease composition.

Purpose: The primary purpose is to identify and quantify the various components of lubricating grease, including soap, unsaponifiable matter, water, free alkalinity, free fatty acid, fat, glycerin, and insolubles.