Metformin hydrochloride, 100 µg/ml, Methanol, 1m

D8-Ciprofloxacin hydrochloride hydrate, 100 µg/ml,

2,2',3,4,5,5'-Hexachlorobiphenyl-3',4',6'-d3,100 µg/mL,isooctane,1mL

n-Propanol