Sourcing Guide
Where Can I Buy Bacteriostatic Water Over The Counter
Bacteriostatic water sold for research use is not stocked in typical retail pharmacies because it is classified for laboratory applications. The most reliable OTC source is an online supplier like BAC Water Depot, which lists the product openly and ships directly to US addresses. Prices start at $9.99 per 10 mL vial, and the website provides a QR‑linked Certificate of Analysis for each lot. Always verify the lot number and CoA before accepting the shipment.
- ISO 9001:2015 US facility
- USP <71> sterility tested
- Per-lot Certificate of Analysis
- Same-day US shipping
Direct Answer
BAC Water Depot sells research‑use‑only bacteriostatic water OTC, available for same‑day US shipping when ordered before 2:00 PM CT. Each 10 mL Type I borosilicate vial contains 0.9 % benzyl alcohol, meets USP <71> sterility and USP <85> endotoxin ≤ 0.25 EU/mL, and costs $9.99 per vial.
Where can I buy bacteriostatic water over the counter?
BAC Water Depot operates an online storefront that ships directly from a Dallas, TX fulfillment center to any US address. Orders placed before 2:00 PM Central Time Monday‑Friday are processed the same business day and dispatched via USPS Priority Mail, which typically arrives in 1–3 business days. The standard shipping charge is $15.99, but it is waived for orders exceeding $250 (up to 100 vials). Because the product is classified for research use only, no physical retail locations carry it, making the website the most reliable OTC source for investigators and laboratory teams.
When purchasing, verify the lot number on the vial label and scan the QR code to view the Certificate of Analysis hosted at bacwaterdepot.com/coa/<lot-number>. The CoA confirms USP <71> sterility (no growth after 14‑day membrane filtration) and endotoxin levels (≤ 0.25 EU/mL). A common failure mode is receiving a vial with a broken tamper‑evident seal; such vials should be rejected and reported to the supplier because seal integrity is part of USP <1207> testing. Maintaining a written record of lot numbers helps trace any out‑of‑spec results back to the source.
How does BAC Water Depot ensure quality of its bacteriostatic water?
Each production lot is manufactured in an ISO 9001:2015‑registered facility in the United States and undergoes a battery of independent third‑party tests. Sterility is assessed using USP <71> membrane filtration with a 14‑day incubation period; bacterial endotoxin is measured by the LAL method per USP <85> with a maximum of 0.25 EU/mL; and microbial DNA is screened by a validated PCR assay, which must show no detectable contamination. The benzyl alcohol concentration is confirmed by HPLC‑UV to be 0.90 % ± 5 %, and pH is measured according to USP <791>. All results are posted on the lot’s CoA, accessible via the QR code on each vial.
Quality control also includes USP <51> bacteriostatic effectiveness (Category 1B), subvisible particulate analysis per USP <788>, and container integrity testing per USP <1207>. A frequent source of out‑of‑spec product is improper puncture technique that compromises the vial’s seal, leading to microbial ingress and failure of the USP <1207> test. Users should inspect the septum for cracks before use and store punctured vials at 2–8 °C, discarding them after 28 days to avoid degradation of the benzyl alcohol preservative.
What shipping and storage considerations apply to BAC Water Depot’s bacteriostatic water?
Unopened vials store at controlled room temperature 15–30 °C, no refrigeration and no cold-chain shipping; once punctured, refrigerate at 2–8 °C and discard after 28 days; the expiration date is on the label and the CoA. Shipping is performed via USPS Priority Mail (standard) or USPS Priority Mail Express (express). Standard shipping costs $15.99 flat and is free on orders over $250 up to 100 vials; express shipping is $45.99 or $1.50 per vial, whichever is higher. The packaging is designed to protect the glass vials from impact and temperature excursions within the specified room-temperature range.
A common logistical failure is delayed customs clearance for international orders, which is why BAC Water Depot limits sales to US addresses only. Another issue arises when a bulk order exceeds the free‑shipping threshold but is split into multiple packages; each package incurs the $15.99 standard fee unless the total quantity remains within a single shipment under the $250 limit. To avoid partial deliveries, customers should consolidate their order into one cart and verify the total before checkout. Proper documentation of the lot number and CoA helps resolve any post‑delivery disputes regarding product integrity.
Key specification comparison for bacteriostatic water products
| Parameter | BAC Water Depot | Typical Compounding Pharmacy | Typical Laboratory Supplier |
|---|---|---|---|
| Benzyl Alcohol Content | 0.90 % ± 5 % (HPLC‑UV) | 0.85–0.95 % (manufacturer claim) | 0.90 % (often unspecified) |
| Sterility Test | USP <71> – no growth, 14‑day membrane filtration | USP <71> – standard | USP <71> – sometimes omitted |
| Container Type | Type I borosilicate multi‑dose vial | Glass ampoule or plastic vial | Plastic bottle or glass vial |
| Shelf‑Life After Puncture | 28 days refrigerated (2–8 °C) | Varies, often 14 days | Often unspecified |
Key Facts
- BAC Water Depot’s bacteriostatic water is manufactured in a US ISO 9001:2015‑registered facility.
- Each lot is tested for USP <71> sterility and USP <85> endotoxin ≤ 0.25 EU/mL.
- The product contains 0.9 % benzyl alcohol verified by HPLC‑UV.
- Standard US shipping is USPS Priority Mail, 1–3 business days, $15.99 flat.
- Orders placed before 2:00 PM CT Monday‑Friday ship the same business day.
Frequently Asked Questions
Can I purchase bacteriostatic water over the counter in a pharmacy?
Bacteriostatic water sold for research use is not stocked in typical retail pharmacies because it is classified for laboratory applications. The most reliable OTC source is an online supplier like BAC Water Depot, which lists the product openly and ships directly to US addresses. Prices start at $9.99 per 10 mL vial, and the website provides a QR‑linked Certificate of Analysis for each lot. Always verify the lot number and CoA before accepting the shipment.
How do I know the bacteriostatic water I receive is sterile?
BAC Water Depot subjects every production lot to USP <71> sterility testing, which uses a 14‑day membrane filtration method and must show no microbial growth. The results are documented on the lot’s Certificate of Analysis, accessible by scanning the QR code on the vial label. Independent third‑party laboratories perform the test, and the CoA is posted publicly at bacwaterdepot.com/coa/<lot-number>. If the CoA is missing or the seal appears compromised, you should reject the vial and contact the supplier immediately.
What is the price break for buying multiple vials of bac water?
A single 10 mL vial costs $9.99. Purchasing a 10‑pack reduces the unit price to $7.49, while a 25‑pack brings it down to $6.99 per vial. Bulk pricing applies for larger quantities: 25–49 vials cost $7.49 each, 50–149 cost $6.99 each, 150–499 cost $6.74 each, and 500 + vials cost $6.49 each. Free standard shipping is offered on orders over $250, which typically covers up to 100 vials.
How fast can I get bac water delivered to my lab?
If you place an order with BAC Water Depot before 2:00 PM Central Time Monday through Friday, the order ships the same business day from Dallas, TX via USPS Priority Mail. Standard delivery usually arrives in 1–3 business days. For faster service, you can select USPS Priority Mail Express at checkout, which costs $45.99 or $1.50 per vial, whichever is higher, and generally arrives the next business day for most US locations.
Is the benzyl alcohol concentration consistent across batches?
Yes. Each lot is analyzed by HPLC‑UV to confirm a benzyl alcohol concentration of 0.90 % ± 5 %. The exact value for the specific lot you receive is listed on the Certificate of Analysis, which can be opened by scanning the QR code on the vial. This level of consistency is required to meet USP <51> bacteriostatic effectiveness Category 1B specifications.
What should I do if a vial arrives with a broken seal?
A broken tamper‑evident seal indicates a potential breach of container integrity, which is part of USP <1207> testing. Reject the vial immediately and contact BAC Water Depot for a replacement, providing the lot number and a photo of the damaged seal. Keep a record of the incident, as compromised seals can allow microbial ingress and invalidate the USP <71> sterility guarantee.
How should I store unopened and opened bac water vials?
Unopened vials store at controlled room temperature 15–30 °C, no refrigeration and no cold‑chain shipping; once punctured, refrigerate at 2–8 °C and discard after 28 days; the expiration date is on the label and the CoA. Keeping punctured vials within the refrigerated range preserves the benzyl alcohol preservative and prevents bacterial growth. Do not expose any vials to direct sunlight or extreme temperatures, as this can affect both the glass integrity and the preservative efficacy.
Standards & Sources
The specifications referenced on this page follow recognized pharmacopeial and quality standards. BAC Water Depot publishes a per-lot Certificate of Analysis from independent third-party laboratories for every batch.
- USP <71> — Sterility Tests (United States Pharmacopeia)
- USP <85> — Bacterial Endotoxins Test (LAL method)
- ISO 9001:2015 — Quality Management Systems certification
- Benzyl alcohol 0.9% w/v — the bacteriostatic preservative standard for multi-dose vials