USP-grade bacteriostatic water with 0.9% benzyl alcohol for peptide reconstitution research.
Real Peptides Bacteriostatic Water 10ml Review
$4.80
Our rating 4.5/5
Brand: Real Peptides / Price: $4.80 / Volume: 10ml / Preservative: 0.9% benzyl alcohol
Review of Real Peptides Bacteriostatic Water 10ml. USP-grade quality, benzyl alcohol content, storage guidelines and how it fits peptide reconstitution.
Essential supply at only $4.80
USP-grade quality framework
10ml sufficient for multiple reconstitutions
Only available in 10ml size
Must be used within 28 days once opened
Key Features
- Volume: 10 ml per vial
- Preservative: 0.9% benzyl alcohol
- Grade: USP (United States Pharmacopeia)
- Packaging: Glass vial with aluminum crimp seal
- Price: $4.80
- SKU: RP-BAC10V
What's Inside
The vial contains purified water and 0.9% benzyl alcohol. Nothing else. No buffers, colorants or additional excipients. USP-grade means the product meets United States Pharmacopeia specifications for purity, conductivity, total organic carbon and particulate matter.
Benzyl alcohol at 0.9% concentration works by disrupting microbial cell membranes. It does not sterilize the solution. It restrains bacterial growth so that incidental contamination from repeated needle punctures does not multiply unchecked. Aseptic technique remains necessary. We recommend swabbing the stopper with 70% isopropyl alcohol before every draw.
How to Use
Swab the rubber stopper of both the bacteriostatic water vial and the peptide vial with alcohol pads. Draw the desired volume of bacteriostatic water into a clean insulin syringe. Insert the needle into the peptide vial at a slight angle and release the water slowly along the inner wall. Do not squirt it directly onto the lyophilized powder cake. Allow the peptide to dissolve without shaking. Gentle swirling is acceptable if dissolution is slow.
A single 10 ml vial of bacteriostatic water can reconstitute multiple peptide vials depending on the volume used per reconstitution. At 2 ml per vial, one bottle covers 5 reconstitutions. At 1 ml per vial, it covers 10. Always use a fresh syringe for each draw to minimize contamination risk.
After opening, use the bacteriostatic water within 28 days. If the water appears cloudy, contains visible particles, or shows any discoloration, discard it immediately.
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Sold and shipped by Real Peptides. Price checked October 2026. We may earn a commission.
Real Peptides Bacteriostatic Water is a 10 ml vial of USP-grade purified water preserved with 0.9% benzyl alcohol. It costs $4.80. The SKU is RP-BAC10V. Bacteriostatic water is the standard solvent for reconstituting lyophilized peptides in research settings. We reviewed this product because it is an essential supply for anyone working with freeze-dried BPC-157 or other injectable peptide preparations.
Overview
Bacteriostatic water differs from sterile water in one critical respect: the addition of 0.9% benzyl alcohol. This preservative inhibits microbial growth and allows the vial to be accessed multiple times over a period of days or weeks. Sterile water contains no preservative and should be used only for single draws. For multi-dose peptide vials, bacteriostatic water is the appropriate choice.
Real Peptides packages this product in a glass vial with a crimped aluminum seal and rubber stopper. Glass is inert and does not leach chemicals into the water. The aluminum crimp holds the stopper firmly in place, maintaining containment between draws.
Our Verdict
Real Peptides Bacteriostatic Water receives 4.5 out of 5 from our editorial team. This is a commodity product. The essential factors are quality grade, packaging and price. Real Peptides satisfies all three. USP-grade water in glass packaging at $4.80 is a fair price.
We recommend keeping a vial on hand whenever lyophilized peptides are in storage. Running out of bacteriostatic water at the point of reconstitution is an avoidable problem. Ordering it alongside a peptide purchase from the same vendor also consolidates shipping costs. The 10 ml volume is sufficient for multiple reconstitutions across several vials.
Our rating
4.5out of 5
Rated by the BPC-157 Injection Guide editorial team, October 2026
USP-grade bacteriostatic water with 0.9% benzyl alcohol for peptide reconstitution research.
Essential supply at only $4.80
USP-grade quality framework
10ml sufficient for multiple reconstitutions
Only available in 10ml size
Must be used within 28 days once opened
FAQ
What is bacteriostatic water used for?
It dissolves lyophilized peptides, proteins and other freeze-dried research compounds into a liquid solution. The 0.9% benzyl alcohol inhibits bacterial growth, so the vial can be punctured multiple times over its 28-day use window.
How long does bacteriostatic water last after opening?
Use within 28 days of the first needle puncture. The benzyl alcohol slows microbial growth but does not guarantee indefinite sterility. Clean the stopper with alcohol and use a fresh syringe for each draw to maximize the effective life span.
Can I use sterile water instead?
Sterile water works for single-use draws where the entire reconstituted solution will be consumed immediately. It contains no preservative, so bacterial contamination is possible after the first puncture. For multi-dose vials accessed over days or weeks, bacteriostatic water is the better choice.
Does bacteriostatic water need to be refrigerated?
Unopened vials can be stored at room temperature away from direct sunlight. After opening, room temperature storage remains acceptable for the 28-day use period. Refrigeration is not required for the water itself, though the reconstituted peptide solution should be stored at 2-8C.
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