EPA Method 505/507 - Pesticide Standard Back Catalog number: 91936 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73516 2-Methylsulfonyl-4-trifluoromethyl benzoic acid Price on request C20000400 PCB No. 4, certified, 25mg Price on request 674897 Roxithromycin, 100mg Price on request