Bacteriostatic Water for Reconstitution
Bacteriostatic water is sterile, nonpyrogenic water for injection containing 0.9% (9 mg/mL) benzyl alcohol as a bacteriostatic preservative, supplied in multiple-dose vials. The USP preparation is labelled as a diluent for drugs that must be dissolved before injection and is not for use in neonates. Bacteriostatic Water is supplied as a sterile solution, in 3 mL, 5 mL and 10 mL sizes, priced RM 10–15. Ships within 2 working days of payment. Sold for laboratory research use only, not for human or veterinary use.
Research use only. Sold for laboratory research only. Not for human or veterinary use, not for consumption, and not a medicine, food or cosmetic.
- Ships within 2 working days of payment.
- Free shipping across Malaysia.
- Pay by FPX online banking.
Certificates of analysis
No certificate of analysis has been published for the batch on sale yet, so this page makes no purity claim. Each certificate will name the testing laboratory, the batch, the test date and the method.
Bacteriostatic Water specifications
| Also known as | Bacteriostatic Water for Injection, USP, BWFI |
|---|---|
| Form | Solution in a sealed vial |
| Sizes | 3 mL · 5 mL · 10 mL |
| Storage (sealed) | Unopened vials: 20–25 °C (label). |
What research says about Bacteriostatic Water
Bacteriostatic water is sterile, nonpyrogenic water for injection containing 0.9% (9 mg/mL) benzyl alcohol as a bacteriostatic preservative, supplied in multiple-dose vials. The USP preparation is labelled as a diluent for drugs that must be dissolved before injection and is not for use in neonates.
Benzyl alcohol acts as an added antimicrobial preservative so that repeated withdrawals can be made from one vial.
Marketed in the US as Bacteriostatic Water for Injection, USP (for example Hospira, DailyMed set id 87d6e9dc-fe3b-4593-ac9a-d7493d1959c7).
Cited studies
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Label states 0.9% (9 mg/mL) or 1.1% (11 mg/mL) benzyl alcohol in water for injection, pH 5.7 (4.5 to 7.0), multiple-dose, not for neonates, stored at 20 to 25 °C.
Bacteriostatic Water for Injection, USP (Hospira) - prescribing information. DailyMed (US National Library of Medicine), Hospira label, 2026. Source
Handling and storage
- Sealed vial
- Unopened vials: 20–25 °C (label).
Shipping, returns and payment
Dispatch. Ships within 2 working days of payment.
Shipping. Free shipping across Malaysia. Peninsular Malaysia 1–4 working days; Sabah, Sarawak and Labuan 3–7 working days.
Returns. No change-of-mind returns; a wrong or damaged item is replaced or refunded. Nothing here affects your rights under the Consumer Protection Act 1999.
Payment. FPX online banking.
Questions
- How is Bacteriostatic Water stored?
Sealed: Unopened vials: 20–25 °C (label).. These are supplier figures, cited in the handling section.
More about Bacteriostatic Water
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Lab guide
Peptide reconstitution arithmetic, worked through
Concentration is the amount of peptide divided by the volume of diluent. Everything else in reconstitution arithmetic follows from that one division, as the worked examples below show.
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Lab guide
Storing lyophilised and reconstituted peptides
Sealed, freeze-dried peptides are usually kept frozen, at −20 °C, away from light. Once dissolved, the published supplier inserts cited here mostly advise against storing the solution for more than a day.