Atrazine-2-hydroxy D5, 100µg/mL in MeOH, 1,1ml

Erythromycin-13C,d3, 1mg

2,3',5-Tribromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 59080-35-2

Chlortoluron-d6 (N,N-dimethyl-d6), 100µg/ml in MeOH, 1ml