EPA Method 548 Analyte Back Catalog number: 30048 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 683369 Hypoxanthine, 1000mg Price on request 2099.18-K-IO Di-n-pentyl phthalate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 131-18-0 Price on request 680395 Dioxabenzofos, 10mg Price on request