CWA Color Back Catalog number: 55140 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 21013 EPA Method 8260 Internal Standard - Revised Price on request NK-CVS-J PCDD & PCDF Calibration Kit, 6 x 200ul, nonane Price on request 1151.31-K-IO n-Hentriacontane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 630-04-6 Price on request