EPA Method 8040 - Surrogate Standard Back Catalog number: 80403 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2020.7-1ML p-Fluorotoluene, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 352-32-9 Price on request 678279 Chlorthion, 100 µg/ml, Acetonitrile, 5ml Price on request 12114.4-10MG Metformin-d6 hydrochloride (dimethyl-d6),neat,neat,10mg, Price on request