Li, 1000 µg/mL in 2% HNO3, 100ml

2,2',3,3',4-Pentabromodiphenyl ether, 1.2ml x 50ug/ml, nonane

Metoprolol-d7 hydrochloride (isopropyl-d7),1000 µg base/mL,MeOH,1mL

Lithium (Li)