Interference Standard 4 Back Catalog number: 52041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94240 Volatile Standard Price on request 3620.12-K-IO 3,3'-Difluorodiphenyl ether, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1800-48-2 Price on request 1527.12-50-NN Dibenzo-p-dioxin-d8,50 µg/mL,n-nonane,1mL, Price on request