EPA Method 527 Surrogate Standard Back Catalog number: 95053 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 41021 1,4-Difluorobenzene Price on request 9503.10-100MG Sulfamethoxazole, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 723-46-6 Price on request 3247.22-K-IO 4,7,10,13,16-Docosapentaenoic acid (all-cis), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2313-14-6 Price on request