Notes: Long-chain Saturated Fatty Acid Methyl Ester Mixture 1 contains four fatty acid methyl esters. It is intended for use as a reference standard for the quantification of saturated long-chain fatty acids in various sample types by GC-MS. This mixture is supplied in an amber ampule in which the headspace has been purged with nitrogen/argon to prevent lipid oxidation. [Matreya, LLC. Catalog No. 1098]