Atrazine, 100 µg/ml, Acetonitrile, 5ml

Ethanol standard in serum,4.0g/L,serum, 1.5mL

iso-Propyl 4-hydroxybenzoate-2,3,5,6-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219798-72-7

4-Nitroaniline