EPA Method 502/524 Surrogate Standard #1 Back Catalog number: 30070 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9417.16-50MG Venlafaxine hydrochloride Price on request 676449 Methimazole, 250mg Price on request 679208 Clencyclohexerol hydrochloride, 10mg Price on request