Reconstitution
Simple explanation
Reconstitution means adding a sterile liquid to a freeze-dried powder so it becomes a solution. Approved medicines have official instructions. The calculator page has general lab notes; it is not a personal mixing protocol.
Scientific explanation
Reconstitution is dissolving a lyophilized product in a specified diluent. Labeled medicines follow their insert. Research vials are not medicines; volume math and general handling notes are not a substitute for labeled compounding or clinical use.