How many units is each Semax amount?
At 10 mg + 2 mL (5 mg/mL) on a U-100 syringe:
Generated from the calculator's own functions. Rows are evenly spaced reference amounts, not suggested amounts. Amber readings don't fit a 100-unit barrel.
| Amount | mg | Volume (mL) | Syringe units |
|---|---|---|---|
| 100 mcg | 0.1 | 0.02 | 2 |
| 200 mcg | 0.2 | 0.04 | 4 |
| 250 mcg | 0.25 | 0.05 | 5 |
| 300 mcg | 0.3 | 0.06 | 6 |
| 400 mcg | 0.4 | 0.08 | 8 |
| 500 mcg | 0.5 | 0.1 | 10 |
| 750 mcg | 0.75 | 0.15 | 15 |
| 1,000 mcg | 1 | 0.2 | 20 |
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How much water for each Semax vial size?
Semax is sold in 2 common sizes (10 mg, 30 mg). The same water volume gives a different concentration in each, so the same reading means a different amount. Each cell shows mcg per unit with mg/mL in brackets.
| Vial | 1 mL | 2 mL | 3 mL | 5 mL |
|---|---|---|---|---|
| 10 mg | 100 (10) | 50 (5) | 33.33 (3.33) | 20 (2) |
| 30 mg | 300 (30) | 150 (15) | 100 (10) | 60 (6) |
How much bacteriostatic water for a 10 mg Semax vial?
1 mL → 10 mg/mL, so 300 mcg is 3 units. 2 mL → 5 mg/mL, so 300 mcg is 6 units. 3 mL → 3.33 mg/mL, so 300 mcg is 9 units. The whole vial holds 33 draws of 300 mcg.
How much bacteriostatic water for a 30 mg Semax vial?
1 mL → 30 mg/mL, so 300 mcg is 1 units. 2 mL → 15 mg/mL, so 300 mcg is 2 units. 3 mL → 10 mg/mL, so 300 mcg is 3 units. The whole vial holds 100 draws of 300 mcg.
Worked example: 10 mg vial, 2 mL, 300 mcg
- Concentration. 10 mg ÷ 2 mL = 5 mg/mL (5,000 mcg/mL).
- Volume. 0.3 mg ÷ 5 mg/mL = 0.06 mL.
- Units. 0.06 mL × 100 = 6 units on a U-100 syringe.
- Check. One unit holds 50 mcg; 6 × 50 mcg = 300 mcg = 0.3 mg, which matches. The vial holds 33 draws of this size.
Semax: notes for the arithmetic
Like Selank, Semax is frequently prepared at a fixed concentration for spray research. The concentration readout (mg/mL and mcg per 0.1 mL) is the number to record.
For the lab procedure itself (materials, aseptic technique, mixing without foaming) see how to reconstitute peptides. For what bacteriostatic water is and how long an opened vial is kept, see the bacteriostatic water guide and the storage guide.
Frequently asked questions
How many units is 300 mcg of Semax?
It depends on the water volume. 10 mg + 2 mL = 5 mg/mL, so 300 mcg is 0.06 mL, or 6 units on a U-100 syringe. With 1 mL instead it would be 3 units.
How much bacteriostatic water for a 10 mg Semax vial?
There is no single correct volume. 1 mL gives 10 mg/mL (100 mcg per unit); 2 mL gives 5 mg/mL (50 mcg per unit); 3 mL gives 3.33 mg/mL (33.33 mcg per unit). Pick the volume that makes your reading easy to measure on the barrel you have.
How much bacteriostatic water for a 30 mg Semax vial?
There is no single correct volume. 1 mL gives 30 mg/mL (300 mcg per unit); 2 mL gives 15 mg/mL (150 mcg per unit); 3 mL gives 10 mg/mL (100 mcg per unit). Pick the volume that makes your reading easy to measure on the barrel you have.
How many mg of Semax is 10 units?
10 units on a U-100 syringe is 0.1 mL. At 5 mg/mL (10 mg in 2 mL) that is 0.5 mg (500 mcg). At a different concentration the answer is different.
Is this a Semax dosing calculator?
It is an arithmetic tool. It converts an amount you enter into a volume and a syringe reading; it does not suggest amounts, schedules or uses. Not approved by the FDA for any use. Sold as a research chemical only.
Sources
Links checked 2026-10-19.