EPA Method 624 Surrogate Standard Back Catalog number: 19112 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 12171.3-2K-ME Acetone-2-13C,2000 µg/mL,MeOH,1mL, Price on request 51113 Benzene and Toluene Calibration Blends Set Price on request 0468.16-200-T 2,7-Dimethylanthracene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 782-23-0 Price on request