VivaReconstitution calculator
Enter the peptide mass in your vial and the volume of bacteriostatic water you plan to add. The calculator returns the resulting concentration and the draw volume on a standard insulin syringe.
- Concentration
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- Per syringe unit
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- Draw to this mark
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- Draws per vial
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Research use only. This calculator performs arithmetic on values you supply. It is intended for laboratory preparation of reference materials and is not dosing guidance. Viva Peptides products are not approved by Health Canada for human or veterinary use.
How the arithmetic works
Reconstitution is a dilution problem, and the only thing that changes when you add more or less water is how many syringe marks a given amount occupies. The peptide in the vial is fixed.
- Convert to micrograms. A 10 mg vial contains 10,000 mcg.
- Divide by the volume added. 10,000 mcg into 2 mL gives 5,000 mcg per mL.
- Divide by the syringe graduation. A U-100 syringe has 100 marks per mL, so each mark holds 50 mcg.
- Divide your target by that. 250 mcg ÷ 50 mcg per mark = 5 marks.
The practical takeaway: if your draws land on very small numbers of marks, add more water. Measuring 5 marks accurately is much easier than measuring 1.