EPA Method 525 Internals & Surrogates Back Catalog number: 95227 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8876.7-25-AN U{13C7}-Patulin, 25µg/mL, Solvent-acetonitrile, Unit 1,2mL, # of units-1, Cas.no. Price on request 683258 Thiamethoxam Metabolite CGA 353968, 25mg Price on request 9757.20-10MG n-Pentyl benzyl phthalate, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1240-18-2 Price on request