Spartan Peptides LLC
Research use only

Peptide reconstitution calculator

Add your vial strength, the bacteriostatic water you're mixing in, and the dose you're aiming for. You'll get the concentration and the exact tick mark to draw to.

Your vial

mg
mL
mcg

Draw to

5units

= 0.05 mL on a 1 mL syringe · 250 mcg (0.25 mg)

050100 units
Concentration
5 mg/mL
Per unit
50 mcg
Doses per vial
40
Total volume
2 mL

How reconstitution works

  1. 1 · Let it settle

    Bring the vial and the bacteriostatic water to room temperature and wipe both stoppers with alcohol.

  2. 2 · Add water slowly

    Aim the stream down the inside wall of the vial. Never squirt directly onto the powder — it can damage the peptide.

  3. 3 · Swirl, don't shake

    Roll it gently until clear. Then store it in the fridge and label it with the date and concentration.

On any insulin syringe, 1 unit = 0.01 mL, so the units shown above are the same regardless of brand. This tool is for educational and research purposes only and is not medical advice.