EPA Method 548.1 Analyte Back Catalog number: 30177 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95406 Aroclor 1254 & Tetrachloro-m-xylene Price on request B389020 Biopterin, 10mg Price on request 1744.13-200-T Benzo[h]quinoline, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 230-27-3 Price on request