EPA Method 8021B Internal Standard Back Catalog number: 19394 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4035-0-IOX5 Diphenylsulfide in isooctane, Blank Units: 5x1mL ampoules Price on request 2662.10-100 Chlordane, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 57-74-9 Price on request SC-264042 Perfluorododecane, 1g Price on request