WHO PCB Extraction Standard, 100pg/µl in nonane, 1,2ml Back Catalog number: P48-W-ES Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 90128R Aroclor 1254 Price on request 15900-5830-100AN5 lambda-Cyhalothric acid, 100µg/ml in Acetonitrile, 5ml Price on request 678003 Fensulfothion, 100 µg/ml, Toluene, 1ml Price on request