PCB Congeners Standard Back Catalog number: 94239 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended B-250S Dow FR-250, 100µg/ml in Isooctane, 1ml Price on request 675584 Thiofanox-sulfoxide, 100 µg/ml, Acetonitrile, 5m Price on request 3927.40-5MG Lutein, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 127-40-2 Price on request