EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0226.24-10MG Coronene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 191-07-1 Price on request 689219 1,2,3-Trichlorobenzene, 100µg/ml in MeOH, 5ml Price on request 50460 Copper AA Standard (Cu) Price on request