EPA Method 507 Nitrogen Phosphorus Pesticide Back Catalog number: 31882 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1546.14-K-IOX10 n-Tetradecane-d30, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 204244-81-5 Price on request 1821.8-1G 1,4-Cyclohexanedicarboxylic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 1076-97-7 Price on request DF-LCS-B40 Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request