EPA Method 515/8150/1658 Herbicides Back Catalog number: 31196 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 43030 CLP Semi-Volatile Tuning Standard Price on request 2863.12-50-IO 5-Fluoro-3,3',4,4'-tetrachlorobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 0655.30-K-IO Squalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 111-02-4 Price on request