Notes: Long-chain monounsaturated fatty acid methyl ester mixture contains five long-chain monounsaturated fatty acid methyl esters. It is intended for use as a reference standard for the detection of long-chain monounsaturated 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. 1099]