Question 1

What is BAC water?

Accepted Answer

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol as a preservative. The preservative prevents bacterial growth, which is why the same vial can be safely used across multiple doses over several weeks.

Question 2

How much BAC water should I add to my vial?

Accepted Answer

Enough to make your dose land at a clean, easy-to-read number on your syringe. Our planner suggests an amount that yields ~10 units on a U-100 insulin syringe. You can always override it.

Question 3

What syringe should I use?

Accepted Answer

For most peptides, a 1 mL insulin syringe (U-100) is a good default. Smaller doses under 30 units are easier to draw accurately on a 0.3 mL insulin syringe with half-unit markings.

Question 4

How long is reconstituted peptide good for?

Accepted Answer

Most reconstituted peptides remain stable for about 28–30 days refrigerated. Some are more stable, some less. Our planner uses each peptide's typical shelf life and lets you override it.

Question 5

Do I need a prescription?

Accepted Answer

In the US, bacteriostatic water is prescription-only when labeled for human use. Our products are sold for laboratory research and educational purposes. We do not provide medical advice.

Question 6

Is BACWater.ai a medical service?

Accepted Answer

No. We provide calculation tools and research supplies. We do not diagnose, prescribe, or provide medical advice. Consult a qualified professional for any medical guidance.

Question 7

Can I use the site without creating an account?

Accepted Answer

Yes. You can use the planner, the calculators, and guest checkout without signing up. Creating an account just gives you a place to save and revisit your plans.

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