EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680401 PCB 153, 10.0 µg/ml, Isooctane, 10ml Price on request 1132.12-15K-10IO n-Dodecane, Selectivity Check Standard, 1.5Wt%, Solvent-isooctane, Unit 10mL, # of units-1, Cas.no. 112-40-3 Price on request 73207 N,N-Dimethylbenzylamine Price on request