EPA Method 8141 Standard Back Catalog number: 92353 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676734 D10-Chlorpyrifos, 20mg Price on request 2401.9-K-IPX5 2,3,5-Trimethylphenol-d11, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-5, Cas.no. 362049-46-5 Price on request 2215.10-K-TX5 1-Aminonaphthalene-d7, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 78832-53-8 Price on request