P48-W-ES WHO PCB Extraction Standards - 1.2 ml in nonane

WHO PCB EXTRACTION STANDARDS IUPAC (pg/µl)

3,3',4,4'-Tetrachloro[13C12]biphenyl 77L (100)

3,4,4',5-Tetrachloro[13C12]biphenyl 81L (100)

2,3,3',4,4'-Pentachloro[13C12]biphenyl 105L (100)

2,3,4,4',5-Pentachloro[13C12]biphenyl 114L (100)