Calibration Standard Mix 1 Back Catalog number: 52033 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679297 Benzo[b]fluoranthene, 10.0 µg/ml, Acetonitrile, Price on request 34002 EPA Method 524.2 - Additional Analytes Price on request 2810.4-50-ME Perfluorobutyric acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 375-22-4 Price on request