Bac Water vs Sterile Water¶
When you mix dry peptides, you need to choose the right water. Bacteriostatic water (bac water) and sterile water are not the same → and this difference matters a lot.
💧 Bacteriostatic Water (Bac Water)¶
This is water with an added preservative (benzyl alcohol) that stops bacteria from growing.
✅ Advantages:
- Safe to use multiple times → you can inject from the same vial over several weeks
- Lasts longer (up to 28 days)
- Better for shared or multi-use vials
- This is what most peptide users choose
💧 Sterile Water¶
This is pure water with no additives → completely clean and safe.
❌ Disadvantages:
- Only safe for one-time use → use it once, then throw it away
- Without preservatives, bacteria can grow quickly if you reuse it
- Risky for peptides because vials are usually used multiple times
- Not recommended for peptide mixing
⚠️ Quick Comparison¶
| Bac Water | Sterile Water | |
|---|---|---|
| Preservative? | Yes (stops bacteria) | No |
| Can reuse? | Yes → up to 28 days | No → single use only |
| Risk if reused? | Low | Very high |
| Best for peptides? | ✅ Yes | ❌ No |
Bottom line: Use bacteriostatic water. Sterile water is too risky for peptides.
📸 Visual Examples¶
