EPA Method 525.2Mix #1 Back Catalog number: 92207 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3565.20-10MG 7,8,9,10-Tetrahydro-benzo[a]pyren-7-ol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 6272-55-5 Price on request 2101.20-K-IO Di-n-hexyl phthalate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 84-75-3 Price on request 50184 Ammonium (NH4+) Price on request