Atrazine-2-hydroxy, 100µg/mL in MeOH, 1ml

Gallic acid, >98%, 20mg

2,2',4,4',5,5'-Hexabromobiphenyl, 50µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 59080-40-9

Tramadol-13C,d3 HCl, 100µg/ml in MeOH, 1ml