This fatty acid methyl ester mix contains five monounsaturated fatty acid methyl esters for the qualitative identification and quantitation of samples by gas chromatography. This mix is ideal for studying problems with the quantitative analysis of animal and vegetable oils and fats. Knowledge of the fatty acid content of bacteria can be of great benefit in understanding microbials and can be of great nutritional importance in animals.1 Understanding the role of enzymes and regulatory pathways in human pathogens is important in drug development.2 Microbial fatty acid profiles are unique from one species to another and can therefore be used in the determination of bacterial identity.3 This is an excellent standard for identifying unknown fatty acid isomers in samples. All materials are analyzed to verify their identity and to determine their purity. All analytes are 99+% pure. This standard is accurately prepared by gravimetric technique (+/-0.5%) and all glassware is class A rated. Ampules are purged with nitrogen/argon before and after filling and chilled before being flame sealed. Store ampules sealed as received and process without delay immediately after opening the ampule. Composition: C16:1 Palmitoleate (cis-9) (20.0%),C18:1 Oleate (cis-9) (20.0%),C20:1 Eicosenoate (cis-11) (20.0%),C22:1 Erucate (cis-13) (20.0%),C24:1 Nervonate (cis-15) (20.0%)