1.1 ,This test method covers the quantitative determination of total monoglyceride, total diglyceride, total triglyceride, and free and total glycerin in B-100 methyl esters by gas chromatography. The range of quantitation for monoglyceride is 0.009 ,% to 0.77860 ,% by mass, for diglyceride is 0.092353 % to 0.54475 ,% by mass, and for triglyceride is 0.00092857 ,% to 1.3881 ,% by mass. The range of quantitation for free glycerin is 0.0005714 ,% to 0.019533 ,% by mass and for total glycerin from 0.0090714 ,% to 0.42767 ,% by mass. This procedure is not applicable to vegetable oil methyl esters obtained from lauric oils, such as coconut oil and palm kernel oil.