Bacteriostatic water is sterile water that contains 0.9% benzyl alcohol as a preservative. The benzyl alcohol inhibits the growth of bacteria, which allows the vial to be accessed multiple times while maintaining the sterility of the solution. It is one of the most commonly used solutions in research and laboratory environments.

The key difference is the preservative. Sterile water contains no additives and is intended for single use — once accessed, it should be discarded. Bacteriostatic water contains 0.9% benzyl alcohol, which prevents bacterial growth and allows the vial to be used multiple times over a 28-day period.

Phosphate buffered saline is an isotonic buffer solution that maintains a stable pH of 7.4. It contains a balanced mix of sodium chloride and phosphate salts. PBS is widely used in research for sample dilution, reagent preparation, and equipment rinsing.

We offer bacteriostatic water in 10mL and 30mL vials, and phosphate buffered saline in 10mL vials. Each product is available as a single vial or in multi-pack configurations (5-pack, 10-pack, and 25-pack) with increasing per-unit savings.

Store at controlled room temperature between 20°C and 25°C (68°F – 77°F). Keep away from direct sunlight and do not freeze. Once a vial has been accessed, use the remaining contents within 28 days using proper aseptic technique.

Yes. Every production lot comes with a Certificate of Analysis (COA) documenting tested parameters including pH, sterility, endotoxin levels, and preservative concentration.

All of our products are manufactured in the United States in facilities that adhere to current Good Manufacturing Practice (cGMP) standards.

No. We offer guest checkout for your convenience. You can also create an account at checkout to track orders and save your information.

We accept all major credit cards including Visa, Mastercard, American Express, and Discover.

No. We do not charge sales tax on any orders.

If your order has not yet shipped, we can usually accommodate changes. Contact us as soon as possible at hello@thebacwaterstore.com with your order number.

Yes. We offer custom pricing for orders of 200+ vials. Visit our Wholesale page to submit an inquiry.

Standard shipping is free on all orders within the United States. No minimum purchase required.

Orders placed before 2:00 PM Pacific Time, Monday through Friday, ship the same business day. Orders placed after the cutoff or on weekends ship the next business day.

Yes. Expedited shipping options are available at checkout. Expedited orders placed before 2:00 PM PT will be dispatched the same day.

We currently ship within the United States only. Contact us for international inquiries.

We offer a 30-day satisfaction guarantee on all unopened products. See our Refund & Returns Policy for complete details.

Contact us at hello@thebacwaterstore.com with your order number and a photo. We will send a replacement or issue a full refund — no questions asked.

We cannot accept returns on opened vials. Once accessed, sterility cannot be verified.

Refunds are processed within 5–7 business days. Your bank may take an additional 5–10 business days to post the credit.