EPA Method 8260 Internal Standard - Revised Back Catalog number: 21013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PFC-MXA Native PFCA Solution/Mixture, 2µg/ml in MeOH, 1,2ml Price on request 71459 Paraoxon Price on request 71047 Tris(1,3-Dichloroisopropyl) phosphate Price on request