Bacteriostatic Water (Pfizer)

Description

Pfizer (Hospira) Bacteriostatic Water for Injection, USP — sterile water preserved with 0.9% benzyl alcohol, manufactured by Pfizer’s Hospira division and sourced through licensed Canadian pharmaceutical distribution. The standard diluent used in laboratory protocols for reconstituting lyophilized research peptides; the benzyl alcohol preservative inhibits microbial growth across multi-use research scenarios.

Manufacturer & Authenticity

Genuine Pfizer/Hospira product, not a compounded equivalent. Each multidose vial ships with the original Pfizer/Hospira labelling, lot number, and expiry date intact. Available in 10 mL and 30 mL multidose vials.

Composition

Sterile water for injection containing 0.9% (w/v) benzyl alcohol. pH approximately 5.7. USP-grade.

Research Applications

The standard diluent for laboratory peptide reconstitution. The benzyl alcohol preservative allows reconstituted research material to remain stable under refrigeration for the standard 28-day multi-use window — significantly longer than the same peptide reconstituted with plain sterile water for injection.

Storage

Store unopened vials at room temperature, protected from light. After first puncture, refrigerate at 2–8°C and use within 28 days per standard laboratory practice. Discard any reconstituted research material at the end of that window regardless of remaining volume.

Quality

Genuine Pfizer/Hospira manufacturing — sterile-filled, endotoxin-tested, USP compliant. Each lot ships with the original manufacturer labelling and lot identification. For laboratory research use only. Not for human injection or consumption.

Frequently Asked Questions

Is this product legal to purchase in Canada for research use?

Peptigo supplies all products strictly for laboratory and in vitro research use. The compound is not a drug, supplement, or cosmetic, and is not sold for human or veterinary use. Researchers purchasing for their own laboratory work, university research programs, or independent in vitro protocols are the intended customer base. Health Canada’s April 2026 advisory specifically addresses unauthorized injectable peptide use; the research-use framing of this product is independent of that consumer-use category.

How is purity verified, and where can I see the Certificate of Analysis?

Every batch is tested independently by Janoshik Analytical, an accredited third-party laboratory. The standard testing panel includes HPLC-UV purity verification, LC-MS identity confirmation, LAL bacterial endotoxin quantification, and USP sterility testing. The Certificate of Analysis for each batch is available on the product page after purchase, and the testing methodology is detailed on the Lab Testing reference page.

What is the standard reconstitution and storage protocol for laboratory use?

The compound is supplied as a lyophilized powder. The standard diluent for reconstitution in research protocols is bacteriostatic water (0.9% benzyl alcohol). The Peptigo reconstitution calculator handles the volume-and-concentration arithmetic for a given target research dose. Unopened lyophilized peptide is stable at room temperature for up to 30 days during transit and should be refrigerated at 2–8°C for long-term storage. Reconstituted peptide should be refrigerated at 2–8°C and is typically functional for 4-6 weeks; protect from light.