EPA Method 548 Analyte Back Catalog number: 30048 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79533 Benzo(a)pyrene Price on request 3439.14-100 Metazachlor, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 67129-08-2 Price on request 71898 4-tert-Butylcatechol Price on request