EPA Method 502.2 Internal Standard Back Catalog number: 91703 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3184.15-K-IO Ethyl tridecanoate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 28267-29-0 Price on request 685128 Ethylisopropylnitrosamine, 100 µg/ml, Methanol, Price on request 11854.12-K-MEX5 Bis(p-chlorophenyl) sulfone,1000 µg/mL ,MeOH,1mL Price on request