EPA Method 548.1 Analyte Back Catalog number: 30277 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70813 Profenophos, 1000µg/ml in MeOH, 1ml Price on request 9963.16-50-IO 2,5-Dimethylphenanthrene , 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 3674-66-6 Price on request 55142 RCRA Nutrients Price on request