Reconstitution Calculator: Concentration, Volume, and Dose Draw

Your details

Pick the unknown you want to calculate; the other two become required inputs.
Total mass of the dry powder or solute you are dissolving.
Volume of liquid (bacteriostatic water, saline, etc.) added to the powder.
The concentration you need in the final solution.
Optional: the single-use dose you want to draw. Leave at 0 to skip.
Reconstitution concentration
2.5

Concentration of the reconstituted solution

Concentration unitmg/mL
Draw volume for dose0.1
Draw volume unitmL
Total doses per vial20
Syringe mark (U-100, 1 mL)10.0 units on a U-100 / 1 mL syringe
Concentration in mg/mL2.5
Draw volume (mL)0.1
Concentration (mg/mL)2.5

Concentration: 2.5000 mg/mL

  • The reconstituted solution has a concentration of 2.5000 mg/mL.
  • To deliver a single 250 mcg dose, draw 0.1000 mL from the vial.
  • The vial contains approximately 20.0 full doses at the desired dose size.
  • Always verify the calculation independently before administering any medication or preparing any compound for critical use.

Next stepUse bacteriostatic water (BW) or the diluent specified in the product monograph. Sterile saline is appropriate for single-use reconstitutions; bacteriostatic water allows multi-dose storage for up to 28 days under refrigeration.

 = Powered by OnlyCalculators