EPA Method 8240A Mix #3 Back Catalog number: 92809 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2517.8-100-ME Caffeine,100 µg/mL,MeOH,1mL, Price on request 680841 Clofibrate, 100 µg/ml, Acetonitrile, 1ml Price on request 1854.10-K-IO n-Butylbenzene-d14, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 65087-59-4 Price on request