EPA Method 531.1 - Analytes Back Catalog number: 30042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1722.17-500-IO 1H-Cyclopenta[l]phenanthrene, 500 µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 235-92-7 Price on request 79403 Aroclor 1221 Price on request 52155A CLP Calibration Standard Price on request