PCB Congener Internal Standard Mix Back Catalog number: 94569 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72881 2,3-Dimethylanthracene Price on request 677860 Diisoheptyl phthalate (tech mixture), 100mg Price on request 677968 Bromophos-ethyl, 100 µg/ml, Toluene, 1ml Price on request