That is why date labeling, storage logs, and conservative time limits matter more than simply asking whether the vial still "looks fine." How to Label and Track a Reconstituted Vial Every reconstituted vial should have at least four pieces of information attached to the research record: compound name, concentration, solvent and volume, and reconstitution date
Store in a dry, cool, shaded place
Brand-name pen injectors follow different rules than compounded vials
Meng F, Cheng H, Qian J, Dai X, Huang Y, Fan Y (2022) In vitro fluidic systems: applying shear stress on endothelial cells
World Journal of Gastroenterology