Sterile bacteriostatic water with 0.9% benzyl alcohol — the standard diluent for reconstituting lyophilized research peptides.
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Bacteriostatic water for laboratory use is the workhorse diluent of the peptide-research bench. It's just sterile water with 0.9% benzyl alcohol, and that small amount of alcohol does the heavy lifting — it keeps bacteria from growing in the vial across multiple withdrawals over several weeks.
Why benzyl alcohol matters: Most lyophilized peptides need to be aliquoted out over time. Without a bacteriostatic agent, a multi-puncture vial would become contaminated quickly. The 0.9% benzyl alcohol concentration is the standard that supports research workflows requiring repeated access to the same vial.
Where you'll see it in research:
Handling notes: Inspect for clarity before use — discard if cloudy or showing particulates.
Every batch is third-party tested for purity, identity, and contaminants. Download the COA for the lot you receive.
Molecular Weight
(water + 0.9% benzyl alcohol)
Form
Sterile aqueous solution
Storage
Room temperature or 2-8°C. Discard 28 days after first puncture per standard research practice.
Sequence
(not applicable)
All compounds are sold individually and do not include reconstitution supplies, syringes, or aliquoting tools. Products ship in lyophilized (freeze-dried) form and require proper reconstitution before use in research settings. See our Reconstitution Solution page for laboratory-grade bacteriostatic water.
Research use only — not for human or animal consumption. See our Research Use Disclaimer.