Peptide dose calculator
Give us three details: the amount of medicine in your vial, the water you added and your dose. The units you need to fill are shown for a U-100 insulin syringe.
Here, you can learn to read your syringe. It doesn't pick a dose for you; that comes from your doctor, your nurse or the product label.
The usual kind is a U-100 insulin syringe: 100 units fill 1 mL. On the side of the syringe, each unit is marked by one small line. Most of them come in three sizes: 30, 50 and 100 units.
An example: 5 mg in the vial, 2 mL of water, a 250 mcg dose
Imagine 5 mg of peptide in your vial, the medicine inside that bottle (mg means milligrams). Your dose is 250 mcg; you mix in 2 mL of water, where mL means milliliters. A microgram (mcg) is far smaller than a milligram; 1 mg equals 1,000 mcg.
With this dose, the syringe is filled to the 10-unit line. Above, the calculator works this out, so you will not have to do the sums yourself.
Peptide calculators
You get the same calculator on each page, plus a units chart for one medicine.
Mixing guides and a peptide conversion calculator
Each of these pages converts one unit into another and guides you through every step. To reconstitute a peptide is to mix water with the dry powder in the vial.

Bacteriostatic water, in brief
Sterile water plus a small amount of benzyl alcohol (0.9%) is what bacteriostatic water is. Benzyl alcohol stops germs from growing, so one bottle can serve several mixes. The CDC says to throw away a bottle 28 days after a needle first goes in, unless its label states a different date.