EPA 1638Mix A Back Catalog number: 53144 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9194.17-100-ME Omeprazole-d3 (benzimidazole-4,6,7-d3), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 59396 Metals Mix #2 Price on request 679278 Dibenz[a,h]anthracene, 10mg Price on request