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 59074 ICP Calibration Standard Price on request 677342 Nonafluoro-1-butanesulfonic acid, 50 µg/ml, Metha Price on request 681361 2-Methylnaphthalene, 50mg Price on request