Calibration Standard Mix 4 Back Catalog number: 53046 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11771.12-100-IO 2,2',3,3',4,5,6,6'-Octachlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 680369 Dibutyl phthalate, 100 µg/ml, Acetone, 1ml Price on request 66128 2,2’,3,3’,4,4’-Hexachlorobiphenyl (128) Price on request