ASTM D4274-16 Standard Test Methods for Testing Polyurethane Raw Materials: Determination of Hydroxyl Numbers of Polyols*, 2023-12-23 Update
ASTM E180-03 Standard Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals *, 2023-12-23 Update
ISO 2554:1997 Plastics - Unsaturated polyester resins - Determination of hydroxyl value
ISO 3696:1987 Water for analytical laboratory use; Specification and test methods