EPA Method 502.2/524.2/601 - Gases Back Catalog number: 30002 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 57833 Arsenic (As) Price on request 31070 EPA Method 502/524 Surrogate Standard #3, 2000µg/ml in MeOH, 1ml Price on request 673253 Desmedipham, 100 µg/ml, Acetonitrile, 5ml Price on request