2,3,8-Tribromodibenzofuran, 1.2ml x 50ug/ml, toluene

Metoprolol tartrate, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 56392-17-7

Ethylbenzene, neat, Solvent-neat, Unit 5mL, # of units-1, Cas.no. 100-41-4

Nitrite (NO2-) as N