What is it?

Bacteriostatic Water (BAC Water) is a sterile water solution with a small amount of benzyl alcohol added (0.9%). It’s a standard lab tool used to reconstitute peptides — basically, to mix a powdered (freeze-dried) compound back into liquid form so it can be used in research. The benzyl alcohol stops bacteria from growing after the vial is opened.

What is it used for?

Most research peptides come in a freeze-dried powder form to stay stable during shipping. BAC Water is what you use to turn that powder back into a liquid solution for lab use. Because the benzyl alcohol keeps bacteria out, a single 30mL vial stays usable across multiple research sessions without contaminating the solution.

Quality & Testing

Each vial is manufactured to strict sterile standards and sized at 30mL for multiple reconstitutions across different compounds in the same session.

Reagent Stability

Once the vial seal is compromised, the reagent’s bacteriostatic efficacy begins to diminish. For optimal experimental integrity and research reproducibility, this solvent should be used within its viable stability window after the seal is broken. Prolonged storage post-opening may reduce the effectiveness of the benzyl alcohol preservative, potentially compromising research outcomes.