3,3'-Dimethyl-4,4'-diaminodiphenylmethane,100 µg/mL,acetonitrile,1mL,

Atrazine-2-hydroxy-d5 (ethyl-d5),100 µg/mL,acetonitrile,1mL,

4-Ethylphenol-2,3,5,6-d4, OD, 1000µg/mL, Solvent-Isooctane, Unit 1mL, # of units-5, Cas.no. 340256-40-8

2,3,4,5-Tetrabromobenzoic acid [13C6 ring], 1.2ml x 50ug/ml, methanol