Color Back Catalog number: 54355 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1999.12-100-IO 2,4,4'-Trichlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 7012-37-5 Price on request 79400 Butyric acid Price on request 50809 ICP Mix #1 Price on request