EPA Method 525 - Internal Standard Back Catalog number: 30031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3532.12-K-IO Cyclododecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 294-62-2 Price on request 31221 1,3-Dichlorobenzene Price on request 79546 Butylated hydroxytoluene Price on request