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Pick your vial, add your water and enter the amount you want. You'll see exactly where to draw on the syringe, in units and mL. It works with blends too.
1 mg = 1,000 mcg. Type any amount, or tap a common one.
Almost all insulin-style syringes are U-100. Check the packaging if you're not sure.
Draw to
| In each draw | Amount |
|---|
What each mark on the syringe holds with this mix.
Every reconstitution calculator uses the same three steps. Here they are in plain numbers, so you can check any result by hand.
mg in vial ÷ mL of water = mg/mL10 mg + 2 mL of bacteriostatic water = 5 mg/mL. The water changes the strength, not the amount of peptide.
amount you want ÷ strength = mLFor 250 mcg (0.25 mg): 0.25 ÷ 5 = 0.05 mL.
mL × 100 = units (U-100)0.05 mL × 100 = 5 units. On a U-100 syringe, 1 unit is always 0.01 mL, whatever the barrel size.
Typical water amounts for the CoreVionRX catalog and what 10 units on a U-100 syringe holds with each one. Use the calculator for any other combination.
| Vial | Water | Strength | 10 units holds |
|---|---|---|---|
| BPC-157 10 mg | 2 mL | 5 mg/mL | 500 mcg |
| TB-500 5 mg | 2 mL | 2.5 mg/mL | 250 mcg |
| GHK-Cu 100 mg | 3 mL | 33.33 mg/mL | 3.33 mg |
| GLP-3RT (Retatrutide) 30 mg | 3 mL | 10 mg/mL | 1 mg |
| MOTS-c 40 mg | 3 mL | 13.33 mg/mL | 1.33 mg |
| Semax 10 mg | 2 mL | 5 mg/mL | 500 mcg |
| Selank 5 mg | 2 mL | 2.5 mg/mL | 250 mcg |
| Epithalon 10 mg | 2 mL | 5 mg/mL | 500 mcg |
| PT-141 10 mg | 2 mL | 5 mg/mL | 500 mcg |
| Melanotan II 10 mg | 2 mL | 5 mg/mL | 500 mcg |
| Ipamorelin 5 mg | 2 mL | 2.5 mg/mL | 250 mcg |
| Tesamorelin 10 mg | 2 mL | 5 mg/mL | 500 mcg |
| AOD9604 10 mg | 2 mL | 5 mg/mL | 500 mcg |
| DSIP 10 mg | 2 mL | 5 mg/mL | 500 mcg |
| Kisspeptin-10 5 mg | 2 mL | 2.5 mg/mL | 250 mcg |
| Thymosin Alpha-1 10 mg | 2 mL | 5 mg/mL | 500 mcg |
| NAD+ 500 mg | 5 mL | 100 mg/mL | 10 mg |
| KLOW blend 80 mg | 3 mL | 26.67 mg/mL | 2.67 mg |
| GLOW blend 70 mg | 3 mL | 23.33 mg/mL | 2.33 mg |
| Wolverine (BPC-157 + TB-500) 20 mg | 2 mL | 10 mg/mL | 1 mg |
| CJC-1295 + Ipamorelin 10 mg | 2 mL | 5 mg/mL | 500 mcg |
Each one opens with the right vial size and shows the numbers for that peptide.
Three steps. 1) Strength = mg in the vial ÷ mL of water added. 2) Volume = the amount you want ÷ strength. 3) Units = volume in mL × 100 on a standard U-100 syringe. Example: 10 mg + 2 mL = 5 mg/mL. For 250 mcg (0.25 mg): 0.25 ÷ 5 = 0.05 mL = 5 units.
mcg and mg measure how much peptide you have (1 mg = 1,000 mcg). mL measures liquid. Units are just the markings on an insulin-style syringe: on a U-100 syringe, 1 unit = 0.01 mL, so 100 units = 1 mL.
There is no single correct amount. The water changes the strength, not how much peptide is in the vial. More water makes each unit weaker, so draws get larger and easier to measure accurately. Many researchers use 2 mL for 5–10 mg vials and 3 mL for larger vials and blends. The calculator suggests a water amount that puts your target on a round, easy-to-read mark.
No. 0.3 mL, 0.5 mL and 1 mL insulin syringes are all U-100: 1 unit is always 0.01 mL. Only the barrel size changes. Smaller barrels have finer markings, which makes small draws easier to read.
Choose the blend in the calculator. You can measure by the whole blend or by one ingredient (for example, the BPC-157 in KLOW). The results show how much of every ingredient is in each draw, because the ingredients dissolve together in the same ratio.
Plan on about one week in the fridge (2–8°C) as a conservative standard. Bacteriostatic water slows microbial growth but does not stop the peptide from slowly breaking down in solution. For longer, split the solution into single-use portions and freeze them, avoiding repeated freeze-thaw cycles.
Keep sealed lyophilized vials cold, dry and dark. The freezer (-20°C) is the standard for longer storage. Short periods at room temperature are fine, which is why vials ship without ice. Let a cold vial warm to room temperature before opening it.
Because the math rarely lands on a whole number. The calculator also shows the nearest line on your syringe. If you would rather get a round number, use the water tip in the results, which suggests a water amount that makes your target land exactly on a mark.
More detail: Reconstitution guide · Storage guide
Research peptides, blends and the bacteriostatic water to mix them.
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