Vial mass plus diluent volume gives a concentration. From there, what any given draw contains is arithmetic. Pick a compound from the catalog to prefill its vial sizes, or enter figures directly.
Splitting the solution before freezing is what avoids repeated freeze-thaw on the whole batch. Choose how many single-use aliquots to make.
Research use only. This tool performs a unit conversion on numbers you supply. It is not dosing guidance, it does not recommend a quantity for any organism, and nothing here is for human or veterinary use. Concentration assumes the lyophilized powder adds negligible volume, which is the standard laboratory approximation at these masses.
Cold solvent onto cold powder, a jet straight into the cake, or a vigorous shake will all cost you material that no calculator will show. The handling reference covers the four-step procedure and the stability window that follows it.
Storage & handling reference