EPA Method 515.1 Internal Standard Back Catalog number: 30023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93809 trans-Nonachlor Price on request 90604 Aroclor 1242 Price on request 0360.10-K-IO 3-Phenylthiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2404-87-7 Price on request