EPA Method 8121 Surrogate Standard Back Catalog number: 81204 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71379 2-Methyl-4-nitroaniline Price on request X9128 4,4’-Methoxychlor Price on request 0225.26-200-T Naphtho[1,2,3,4-ghi]perylene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 190-84-1 Price on request