Precision and Recovery Stock Solution: WHO PCBs, 1.2ml, nonane

4,5,6-Trichloroguaiacol , 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 2668-24-8

n-Triacontane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 638-68-6

Fenthion, 100 µg/ml, Acetonitrile, 5ml