EPA Method 507 Nitrogen Phosphorus Pesticide Back Catalog number: 31882 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended MBP-153 2,2',4,4',5,5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request 92684 Pesticide Mix # 2,10ug/ml in Ethylacetate,1ml Price on request 0217.13-K-T Fluorene, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 86-73-7 Price on request