Peptide Reconstitution Calculator for iPhone

Reconstitution math divides the total mass in the vial by the volume of liquid added, giving a concentration (for example mg per mL). From that concentration you can compute the volume that contains any reference amount, and translate that volume into syringe units. Reconstitute performs exactly this arithmetic and shows every intermediate value.

BAC water is shorthand for bacteriostatic water — sterile water containing a small amount of benzyl alcohol that inhibits bacterial growth, commonly used to dissolve lyophilized (freeze-dried) powders. In reconstitution math, the volume of BAC water you add is what determines the final concentration in the vial. Reconstitute takes that volume as one of its three inputs.

On a U-100 syringe, 1 mL equals 100 units; on a U-50 it is 50 units per mL, and on a U-30 it is 30 units per mL. The same liquid volume therefore reads as a different unit count depending on the syringe scale. Reconstitute shows all three scales side by side and updates them live.

The number describes how many units the syringe's markings divide 1 mL into: 30, 50 or 100. A U-30 barrel spreads a small volume across a longer scale, which makes small draws easier to read. Reconstitute converts the same draw volume into the correct unit count for whichever syringe you select.

One milligram equals 1,000 micrograms, so you multiply mg by 1,000 to get mcg and divide by 1,000 to go back. Mixing the two units up is one of the most common calculation errors. Reconstitute displays every value in both mg and mcg simultaneously so there is no mental conversion step.

Divide the total mass in the vial by the volume of liquid you added: a 10 mg vial plus 2 mL of water gives 5 mg/mL. Reconstitute does this the moment you enter both numbers, and carries full significant figures through every later step instead of rounding early.

Yes — that is exactly what Reconstitute does. You enter the vial mass, the water volume and a reference dose, and it returns the draw volume and the corresponding units on U-30, U-50 and U-100 syringes. Everything is computed on your iPhone.

Reconstitute flags it. If the computed draw volume exceeds the capacity of the selected syringe, or is so small that it falls below the syringe's useful reading precision, the app shows a warning next to the result instead of quietly displaying an unusable number.

No. Reconstitute is a math utility for research and veterinary reference contexts — it computes concentration, volume and unit conversions from numbers you enter. It does not recommend doses, is not a medical device, and does not replace advice from a qualified professional.

Yes. The built-in ledger records each vial and every draw against it, and shows the remaining capacity. The ledger lives entirely on your device and works offline.

Yes. The ledger exports to CSV for spreadsheets and to PDF for a readable document, and both files are generated on the device itself. Nothing is uploaded to a server.

Reconstitute does — the calculator and the ledger both run in airplane mode. There is no account, no sign-in, and no network requirement anywhere in the app.