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 73152 Nonafluoro-1-butanesulfonate Price on request 53072 Spiking Standard 3 Price on request 82535 EPA Method 8250 - Acid Matrix Spiking Solution Price on request