Calculate the volume of diluent required to reconstitute a powder to a desired concentration.
Reconstitution Details
Diluent Required
Volume to Add10.0000mL
Formula: V = m / C
Volume vs. Concentration
How volume changes with target concentration for 100 mg.
About this calculator
Overview
Reconstitution is the process of adding a liquid (diluent) to a solid powder or lyophilized substance to create a solution of precise concentration. This is commonly done in pharmaceutical, biochemical, and laboratory settings where exact concentrations are critical for proper function or safety.
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Pro Tips
Always use the exact amount of diluent specified to achieve the correct concentration.
For precise work, account for the volume displacement by the powder itself (usually small but can matter for high concentrations).
Use calibrated pipettes or syringes for accurate measurements, especially for medical applications.
Store reconstituted solutions according to manufacturer guidelines, as they may have shorter shelf lives than the powder form.
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Fun Facts
"Lyophilized (freeze-dried) drugs can have shelf lives of years when stored as powders, versus months when in solution."
"The 'shake well after reconstitution' instruction exists because powders may not dissolve instantly and can form concentration gradients."
"Some vaccines require reconstitution with specific diluents that also serve as stabilizers or adjuvants."
"In biochemistry, protein solutions are often reconstituted just before use to prevent denaturation during storage."
