Internal Reference Standard Back Catalog number: 52187 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 687450 Brassicasterol, 5mg Price on request 677712 1-Methylnaphthalene, 10.0 µg/ml, Acetonitrile, 1 Price on request 91358 1,1,1,2-Tetrachloroethane Price on request