Bentazon-d7 (isopropyl-d7),100 µg/mL,acetonitrile,1mL,

Imazamethabenz-methyl, 100 µg/ml, Acetonitrile,

4-Methylchrysene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3351-30-2

2,3',4',5-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL,