EPA Method 8141 Surrogate Standard Back Catalog number: 92387 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50110D TOC Calibration Standard Price on request 8401.7-1ML Perfluoroheptane, isomer mixture, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 335-57-9 Price on request 2377.10-K-IP 2-Naphthol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 135-19-3 Price on request