Bacteriostatic Water for Injection

Understanding Bacteriostatic Water for Injection

A GRAM Peptides Research Guide

Bacteriostatic Water for Injection (BWFI) is a cornerstone in laboratory and research applications, especially in peptide preparation and reconstitution. At GRAM Peptides, precision, purity, and compliance with scientific standards define every product we make and use.

What Is Bacteriostatic Water?

Bacteriostatic Water is sterile, non-pyrogenic water containing 0.9% benzyl alcohol as a preservative. The benzyl alcohol acts as a bacteriostatic agent, meaning it inhibits bacterial growth within the vial, allowing for multiple withdrawals under aseptic conditions.

This distinguishes it from Sterile Water for Injection (SWFI), which is preservative-free and designed for single-use only. Once opened, sterile water must be discarded immediately to avoid contamination, while bacteriostatic water remains stable for up to 28 days after first use when properly stored.

Why Quality Matters

For research and compounding applications, the purity and sterility of BWFI are critical. Using inferior or contaminated diluents can compromise your results, peptide stability, and safety. GRAM Peptides ensures every vial is prepared under ISO-compliant laboratory conditions, with USP-grade benzyl alcohol and sterile water that meet or exceed research standards.

Buy Direct from GRAM Peptides

GRAM Peptides provides pharma-grade Bacteriostatic Water for Injection, manufactured and packaged with uncompromising attention to quality. Each batch undergoes:

• Sterility testing
• Visual inspection for particulates and clarity
• pH and preservative concentration verification

Our BWFI is available in 30 mL vials, suitable for peptide reconstitution and other laboratory uses.

About GRAM Peptides

GRAM Peptides is a pharmacist-formulated research brand committed to integrity, science, and transparency. Every product is made in the USA, batch-tested for purity, and labeled for research use only.

We supply peptides, bacteriostatic water, and lab essentials that meet the highest standards of quality, ensuring your research reflects precision and reliability from start to finish.

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