EPA Method 8260B Surrogate Standard Back Catalog number: 23112 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 57833 Arsenic (As) Price on request 9698.29-10MG 5 alpha(H)-Cholestan-3ß-ol acetate, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. Price on request 9286.25-25MG Quinapril hydrochloride, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 82586-55-8 Price on request