Supplemental Analytes Back Catalog number: 93617 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended E685102 Ethynyl Estradiol-2,4,16,16-d4, 1mg Price on request 71378 4,4’-Diamino-3,3’-dimethyldiphenylmethane Price on request 30100 EPA Method 551.1 - Analytes Mix “A” Price on request