EPA Method 524.3 - Internal Standard Back Catalog number: 95488 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0813.15-K-IO 3-Methylphenanthrene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 832-71-3 Price on request 673665 Phosphamidon, 10.0 µg/ml, Ethyl acetate, 10ml Price on request L469375 Lofentanil, 1mg Price on request