EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96033 o-Cresol-d8 & p-Cresol-d8 Price on request 56085 QC Standard 2 Price on request 9740.27-10MG 1-Heptacosanol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 2004-39-9 Price on request