Reconstitution & Measurement Math
Calculating concentration and draw volume for research protocols.
Accurate research measurements come down to two simple calculations: concentration and draw volume.
Concentration
Concentration = vial amount ÷ water added. Example: 10 mg of peptide reconstituted with 2 mL of bacteriostatic water gives 5 mg per mL.
Draw volume
To measure a target research amount, divide it by the concentration. Example: at 5 mg/mL, a 0.25 mg research amount is 0.05 mL — five units on a standard 100-unit syringe.
A tip
Choosing a round concentration such as 5 mg/mL makes every later measurement easier and reduces error.
Get research-ready
Every compound we carry ships lyophilized with its batch Certificate of Analysis.
For research use only. This guide describes laboratory handling of research materials and is not medical, dosing, or usage advice. Products are not for human or veterinary use.