Reconstitution Calculator
Enter your vial size and target dose to get the exact draw point on your insulin syringe, resulting concentration, doses per vial, and how long a vial lasts at your chosen frequency. For research dilution math only.
Reconstitution Calculator
Units shown assume a standard U-100 insulin syringe (100 units = 1 mL). Figures are for research dilution math only — not dosing guidance.
What is BAC water?
Bacteriostatic water contains 0.9% benzyl alcohol, which inhibits microbial growth and allows a reconstituted vial to be used over multiple draws.
30 vs 100-unit syringe
Both are U-100 (100 units = 1 mL). A 30-unit syringe holds 0.3 mL and offers finer graduations for small draws; a 100-unit holds 1 mL.
Reading units
If the calculator says draw to 25 units, pull the plunger to the 25 mark on the barrel. Units, not mL, are what you read on the syringe.
Need full instructions? Read the reconstitution guide or the syringe guide.