EPA Method 8141 Standard Back Catalog number: 92353 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10167.25-K-IO Pentaethylene glycol mono(p-nonylphenyl) ether isomer mix, 1000µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 72299 1,3-Diethyl-1,3-diphenyl urea Price on request 2216.10-K-T 1-Nitronaphthalene-d7, 1000µg/ml in Toluene, 1ml Price on request