Result
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⚠️Educational Use Only. Not medical advice. Consult a qualified healthcare professional.
mg
Enter a valid vial size.
mcg/ml
Common: 1,000–5,000 mcg/ml.
Enter a valid concentration.
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Formulas Explained
Mode A — Find BAC Water Volume
BAC Water (ml) = (Vial mg × 1000) ÷ Target Concentration (mcg/ml)Mode B — Find Resulting Concentration
Concentration (mcg/ml) = (Vial mg × 1000) ÷ BAC Water (ml)Quick Reference Table
| Vial | BAC Water | Concentration |
|---|---|---|
| 5 mg | 1 ml | 5,000 mcg/ml |
| 5 mg | 2 ml | 2,500 mcg/ml |
| 5 mg | 5 ml | 1,000 mcg/ml |
| 10 mg | 2 ml | 5,000 mcg/ml |
| 2 mg | 1 ml | 2,000 mcg/ml |
Frequently Asked Questions
Bacteriostatic water (BAC water) is sterile water with 0.9% benzyl alcohol. The preservative inhibits bacterial growth, making it suitable for multi-use research vials and extending the shelf life of reconstituted peptide solutions.
It depends on your dose and preferred draw volume. Higher concentrations (5,000 mcg/ml) give small, precise draws. Lower concentrations (1,000 mcg/ml) give larger, easier-to-read volumes. Use our BAC Water Calculator to work backwards from a preferred IU draw amount.
No — the total peptide in the vial is fixed. More water = lower concentration = larger draw per dose. Less water = higher concentration = smaller draw per dose. Total peptide per dose stays the same if you recalculate with the dosage calculator.