EPA Method 515.1 Internal Standard Back Catalog number: 31023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95328 2,4,6-Trichloroanisole-d5 Price on request 11698.12-100-IO 2,3,4',5-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL, Price on request 8423.10-100MG Pyrazon, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 1698-60-8 Price on request