Dow FR-250, 100µg/ml in Isooctane, 1ml Back Catalog number: B-250S Availability: In the manufacturer's stock Price on request - + Recommended S-4282 Internal Standard for GC-analysis of PAH compounds II S-4282 Compound Prod.no. Batch no. Purity CAS no. Grav. conc. 2,2'-Binaphthyl 0254,20 2951 99.9 % 612-78 Price on request 673189 Aldicarb, 100 µg/ml, Acetonitrile, 5ml Price on request 94731 3,3’-Dichlorobenzidine Price on request