Mixing Calculator
Want one vial you draw from once per injection? Enter each compound's vial weight and target dose. We work out how to reconstitute and transfer them — including partial transfers — so a single draw delivers every dose exactly.
Injections
20
Final volume
2.00 mL
Draw / inj
10.0 units
Compound B runs out first, so it caps the batch at 20 injections (10 mg ÷ 0.5 mg per dose). It's used whole; every other vial is only partially transferred. Want more doses? Increase that vial's weight or lower its dose.
Draw 10.0 units (0.100 mL) per injection
| Compound | Vial used | In mix | Final conc. | Dose / inj |
|---|---|---|---|---|
| Compound A | 50% | 5.00 mg | 2.50 mg/mL | 0.25 mg |
| Compound B (limiting — whole vial) | 100% | 10.00 mg | 5.00 mg/mL | 0.5 mg |
- 1Reconstitute Compound B (the mixing vial) with 1.5 mL of BAC water.
- 2Reconstitute Compound A with 1 mL of BAC water, then draw 0.5 mL (50 units) and inject it into the Compound B vial.
- 3The mixing vial now holds 2 mL total. Draw 0.1 mL (10 units) per injection — that's 20 injections, each delivering the target dose of every compound.
How it works
Once everything is in one vial, a single draw delivers each compound in proportion to how much of it is in the mix — so the per-injection ratio is fixed by the milligrams you put in. The calculator picks the compound that runs out first as the "anchor" (used whole), then for every other compound it reconstitutes the vial and tells you to transfer only the fraction needed. That's why you might reconstitute one vial and move just half of it into another.
You choose the injection size (how much you draw per shot). The final vial volume is simply that draw times the number of injections — pick a bigger injection size for a larger, easier-to-measure final volume, or a smaller one to use less BAC water. Either way each injection delivers the same target doses.