EPA Method 8260B Surrogate Standard Back Catalog number: 23012 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3104.12-50-IO 2,2',5,6'-Tetrabromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 60044-25-9 Price on request 678378 4,4'-DDD, 100 µg/ml, Acetonitrile, 5ml Price on request 684224 1-Nitrosopyrrolidine, 100µg/ml inMeOH, 5ml Price on request