This USP test method follows the color determintation procedure directly from the USP Monograph for glycerin.
This USP test method follows the color determintation procedure directly from the USP Monograph for glycerin.
This test method determines the color of oils and other transparent liquids by comparing samples to calibrated Lovibond® or Gardner liquid standards, providing a standardized visual evaluation of red/yellow (RYBN) tint and overall Gardner color to ensure consistent color grading across batches.
This test method determines the concentration of glycerin with a calculation involving the specific gravity and relative density of the glycerin sample.