EPA Method 531.1 - Analytes Mixture Back Catalog number: 33042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 97986 Hydrocarbon Mix #2 Price on request 94750 4,4’-Diamino-3,3’-dimethyldiphenylmethane Price on request T795350 3,3’,5’-Triiodo-L-thyronine, 10mg Price on request