EPA Method 8260B Surrogate Standard Back Catalog number: 23004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 18000-0142-100ME5 Bisoprolol, 100µg/ml in MeOH, 5ml Price on request 2235.17-5MG Aflatoxin G1, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 1165-39-5 Price on request 672994 19-Norethindrone acetate, 100mg Price on request