Dibenzo-p-dioxin,50 µg/mL,n-nonane,1mL,

Desmedipham, 100µg/ml in MeOH, 5ml

4-n-Heptylbenzoic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 38350-87-7

2,3,3',5'-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL,