Bacteriostatic Water – 10ML

What Is Bacteriostatic Water? Uses & Overview

Bacteriostatic water is the standard reconstitution solvent for lyophilized peptides, containing 0.9% benzyl alcohol in sterile water for injection (SWFI). Available in Canada from Reviv Peptides as a 10 ml multi-dose vial, bacteriostatic water inhibits bacterial growth for up to 28 days post-reconstitution — making it the preferred choice over sterile saline for peptide protocols requiring multi-day vial use.

Unlike standard sterile water, which should be used immediately after opening, bacteriostatic water maintains its sterility across repeated needle punctures due to benzyl alcohol’s inhibitory action on bacterial cell membranes — making it indispensable for multi-dose peptide research protocols.

Bacteriostatic Water Benefits & Uses

• Reconstitution of lyophilized peptides (BPC-157, CJC-1295, TB-500, etc.)
• Multi-dose vial preparation — maintains sterility across repeated withdrawals
• Compatible with all standard peptide formulations at physiological pH
• Preferred diluent for subcutaneous research administration protocols

Key Properties

• Preservative: 0.9% benzyl alcohol (bacteriostatic agent)
• pH: 4.5–7.0 (compatible with most peptide formulations)
• Sterility: USP sterile water for injection standard
• Multi-use: Maintains sterility across repeated needle punctures for 28 days post-opening

Product Specifications

• Volume: 10 mL per vial
• Preservative: 0.9% benzyl alcohol
• Storage: Room temperature (15–25 °C); protect from freezing; discard 28 days after first use
• Compatibility: All standard peptides

Bacteriostatic Water Canada FAQs

What is the difference between bacteriostatic water and sterile water?

Sterile water contains no preservative and should be used immediately (single dose only). Bacteriostatic water contains 0.9% benzyl alcohol, which inhibits bacterial growth and allows multiple draws from the same vial over up to 28 days — essential for multi-dose peptide research protocols.

What is the difference between bacteriostatic water and normal saline?

Normal saline (0.9% NaCl) is isotonic and preservative-free. Bacteriostatic water contains benzyl alcohol preservative and is used specifically for multi-dose vial reconstitution. Some peptides can precipitate in saline but reconstitute cleanly in bacteriostatic water — always follow your specific peptide’s reconstitution guidance.

How much bacteriostatic water should I use to reconstitute a peptide vial?

The reconstitution volume depends on the desired working concentration for your specific research protocol. A common starting point for 10 mg peptide vials is 1–2 mL of bacteriostatic water, yielding 5–10 mg/mL concentration. Adjust based on your experimental design.