1,2,3,4-Tetrachlorobenzene, 1000µg/mL in Isooctane, 1ml Back Catalog number: 3750.6-K-IO Manufacturer: CHIRON AS Availability: 3 weeks Price on request - + Recommended 0453.3-150-CYX5 GC-IRMS Standards (C25 (?13C: -28.21); C30 (?13C: -28.60); C36 (?13C: -26.15)), 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. Price on request 2037.8-10MG Perfluorooctane sulfonic acid Price on request 2178.12-K-IO 2,4'-Difluorodiphenyl ether, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 863315-03-1 Price on request