PCB-Mix 21, 10µg/mL in Cyclohexane, 10ml

4,4’-Dichlorobiphenyl

0.020 N Sodium Hydroxide

n-C15/n-C20, Pentadecane/Eicosane (Integration control) 1500 µg Pentadecane and 1000 µg Eicosane in 1mL isooctane n-Pentadecane/n-Eicosane = 3:2