EPA Method 502.2/524.2/601 - Gases Back Catalog number: 30002 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 73516 2-Methylsulfonyl-4-trifluoromethyl benzoic acid Price on request 9138.7-100MG Mesalazine, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 89-57-6 Price on request 2189.4-50-ME Perfluorobutyric acid, sodium salt, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2218-54-4 Price on request