4-Bromo[13C6]phenol, 1.2ml x 100ug/ml, toluene

2,4-Dihydroxybenzophenone-13C6, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 131-56-6 (unlabelled)

Atrazine desethyl, 100µg/mL in MeOH, 1ml

Metazachlor, certified, 0.1g