EPA Method 502/524 Surrogate Standard #1 Back Catalog number: 30070 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79284 a-BHC Price on request 30069 Internal standard 3, 2000g/ml in MeOH, 1ml Price on request 674064 Coumaphos-oxon, 10mg Price on request