Guide
Mixing guide
What the mg on a vial means, what bacteriostatic water is for, and how much water gives you which concentration.
Handling information for laboratory research use only. Not for human or veterinary use.
What the mg means
Every vial holds a lyophilized (freeze-dried) powder. The number on the label, like 10mg, is how much peptide is in that powder.
Adding water doesn't change that number. A 10mg vial still holds 10mg once it's mixed. The water only decides how concentrated the liquid is.
1mg is 1,000mcg, so a 10mg vial holds 10,000mcg.
Ten milligrams of powder is a small amount. In the vial it can look like a thin film or a small pellet at the bottom, which is normal.
Bacteriostatic water
Bacteriostatic water is sterile water with 0.9% benzyl alcohol. The benzyl alcohol stops bacteria from growing, which matters for a vial that gets opened more than once.
Plain sterile water has no preservative, so it's only good for a single use. Tap, bottled and distilled water aren't sterile and shouldn't go in a vial.
How much water
There isn't one right amount. The water you add sets the concentration:
mg in the vial ÷ ml of water = mg per ml
Say you add 2ml of water to a 10mg vial. That's 10 ÷ 2 = 5mg per ml, and every 0.1ml of it holds 0.5mg (500mcg).
More water spreads the same mg through more liquid, which makes small amounts easier to measure. Less water makes it stronger. Just make sure the vial has room for the water you add.
Calculator
Every vial we carry
The concentration each one comes out at with 1, 2, 3 or 5ml of water.
| Product | In the vial | 1ml water | 2ml water | 3ml water | 5ml water |
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Reconstituting a vial
- Let both vials reach room temperature. Cold powder dissolves slowly.
- Add the water slowly, down the inside of the glass. Not straight onto the powder.
- Swirl gently. Don't shake. Shaking makes foam, and foam damages peptides.
- Wait until it's completely clear. That usually takes a few minutes. A vial with ghkcu in it turns clear blue, which is the copper. If it stays cloudy, has specks in it or leaves a film on the glass, something is wrong with that batch, so message us.
Storage
- Sealed vialsFine at room temperature for delivery. Keep them in the fridge if you'll use them soon, or in the freezer at -15°C or colder for long storage, out of light.
- After mixingIn the fridge at 2 to 8°C, away from light. Don't freeze a vial you'll open again: repeated freezing and thawing breaks peptides down.
- How longThe usual standard for a vial with a preservative is 28 days after it's first opened. Write the date on it when you mix it.
Everything on this page is general handling information for laboratory research. It isn't medical advice, and nothing we sell is for human or veterinary use. Questions about an order or handling? Message us. We don't advise on how anything is used.