UCMR4 - Method 525.3 - Surrogate Mix Back Catalog number: 98747 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2042.8-10MG n-Perfluorooctanoic acid Price on request 680167 Propionic acid, 1ml Price on request 684863 o-Phenetidine, 1000mg Price on request