Sourcing
Same-Day Bacteriostatic Water Shipping in the USA
Yes. BAC Water Depot ships orders placed before 2:00 PM Central Time the same business day from a U.S. fulfillment center. Shipping typically arrives within 1‑2 business days via standard ground service. Expedited carriers are available at checkout for an additional fee. Tracking information is provided automatically once the order is dispatched.
- ISO 9001:2015 US facility
- USP <71> sterility tested
- Per-lot Certificate of Analysis
- Same-day US shipping
Direct Answer
BAC Water Depot provides same‑day U.S. shipping of bacteriostatic water when orders are placed before 2:00 PM CT, delivering USP <71> sterility‑tested 10 mL vials from an ISO 9001:2015‑registered facility. Each vial contains 0.9 % benzyl alcohol and costs $9.99 for a single unit or $6.49 per vial in bulk orders of 500 +.
What are the storage requirements for bacteriotic water to maintain sterility?
Bacteriostatic water must be stored between 2 °C and 8 °C (35 °F–46 °F) to preserve the 0.9 % benzyl alcohol preservative and prevent microbial growth. Exposure to temperatures above 25 °C for more than 48 hours can degrade the preservative, reducing its efficacy and increasing the risk of contamination during reconstitution. BAC Water Depot vials are packaged in insulated cartons with a temperature‑monitoring label that changes color if the cold chain is broken, allowing users to verify proper storage before use.
When a vial is opened, the sterility guarantee ends after 28 days if kept refrigerated, as specified by USP <71>. Failure to reseal the vial tightly or to return it to the recommended temperature range can lead to loss of sterility and precipitation of benzyl alcohol. Users should label the vial with the opening date and discard any remaining solution after the 28‑day window to avoid compromised dosing accuracy.
How do I calculate the correct reconstitution volume using bacteriostatic water?
To reconstitute a lyophilized peptide, first determine the desired final concentration (e.g., 1 mg/mL). Divide the peptide’s total mass by the target concentration to obtain the required volume of bacteriostatic water. For a 250 µg vial, 0.250 mL of water yields 1 mg/mL. BAC Water Depot’s 10 mL vials provide ample volume for multiple reconstitutions, and the QR‑linked Certificate of Analysis confirms the exact benzyl alcohol content, which can affect solubility for hydrophobic compounds.
A common error is neglecting the 0.9 % benzyl alcohol when calculating pH‑sensitive formulations; the alcohol can shift pH by up to 0.2 units, potentially precipitating peptides. After adding water, gently swirl (do not vortex) for 30 seconds and allow the solution to equilibrate for 5 minutes before drawing the dose. If cloudiness or particles appear, discard the vial, as this indicates possible contamination or precipitation.
What documentation accompanies each lot of bacteriostatic water for traceability?
Each lot from BAC Water Depot includes a scannable QR code on the vial label that links directly to a permanent online Certificate of Analysis (COA) at bacwaterdepot.com/coa/[lot-number]. The COA lists USP <71> sterility test results, endotoxin levels (<0.5 EU/mL), and benzyl alcohol concentration (0.90 % ± 0.02 %). The documentation also records the three independent third‑party laboratories that performed the testing, providing full traceability for quality‑controlled research use.
Failure to retain the COA can complicate audits or grant applications that require proof of reagent purity. Researchers should download and archive the PDF version of the COA at the time of receipt. In the rare event of a discrepancy, the lot number and QR code enable rapid verification with the manufacturer, reducing downtime in critical experiments.
Recommended Storage and Stability Parameters for Bacteriostatic Water (0.9 % Benzyl Alcohol)
| Parameter | Recommended Range | Maximum Deviation | Impact of Exceeding |
|---|---|---|---|
| Storage Temperature (°C) | 2 – 8 | ± 3 | Accelerated preservative degradation, increased contamination risk |
| Shelf Life (Closed) | 24 months | N/A | Loss of sterility after expiration |
| Opened Shelf Life (Refrigerated) | 28 days | N/A | Bacterial growth if not refrigerated |
| pH (at 25 °C) | 4.5 – 5.5 | ± 0.3 | Altered solubility of pH‑sensitive compounds |
| Benzyl Alcohol Concentration (%) | 0.90 ± 0.02 | ± 0.05 | Variability in preservative effect, potential toxicity |
Key Facts
- BAC Water Depot manufactures bacteriostatic water in a USDA‑registered ISO 9001:2015 facility.
- Each vial is USP <71> sterility tested per lot by three independent third‑party laboratories.
- The product contains 0.9 % benzyl alcohol as a bacteriostatic agent.
- Same‑day U.S. shipping is available for orders placed before 2:00 PM CT.
- A QR code on every vial links to an online per‑lot Certificate of Analysis.
Frequently Asked Questions
Can I get same‑day shipping for bacteriostatic water in the USA?
Yes. BAC Water Depot ships orders placed before 2:00 PM Central Time the same business day from a U.S. fulfillment center. Shipping typically arrives within 1‑2 business days via standard ground service. Expedited carriers are available at checkout for an additional fee. Tracking information is provided automatically once the order is dispatched.
How does USP <71> sterility testing work for each lot?
USP <71> requires that each lot undergoes membrane filtration followed by incubation in both fluid thioglycollate medium and tryptic soy broth for 14 days. BAC Water Depot submits three independent labs to perform the test, and all must report a negative result for microbial growth. The results are documented on the lot’s Certificate of Analysis, which is accessible via the vial’s QR code.
What is the price advantage of buying bulk bacteriostatic water?
BAC Water Depot offers tiered pricing that reduces the per‑vial cost as quantity increases. A single 10 mL vial costs $9.99, while a 10‑pack is $74.99 ($7.50 each). Bulk tiers start at 25 vials for $7.49 per vial, drop to $6.99 at 50 vials, $6.74 at 150, and $6.49 for orders of 500 or more. Bulk purchases also qualify for free same‑day shipping on qualifying orders.
Is bacteriostatic water suitable for diluting vaccines or injectable drugs?
Bacteriostatic water is intended for laboratory and research use, not for clinical administration. While it contains a preservative (0.9 % benzyl alcohol) that inhibits bacterial growth, the USP <71> sterility test does not certify it for human injection. For clinical purposes, manufacturers must use USP‑graded sterile water for injection that meets FDA regulations.
How long can I store opened bacteriostatic water vials?
Once opened, bacteriostatic water should be kept refrigerated at 2 – 8 °C and used within 28 days, as specified by USP <71>. The benzyl alcohol preservative slows bacterial growth but does not provide indefinite sterility. Users should label the vial with the opening date and discard any remaining solution after the 28‑day period to maintain sample integrity.
What are common causes of precipitation when reconstituting peptides with bacteriostatic water?
Precipitation can occur if the peptide’s solubility is pH‑sensitive and the 0.9 % benzyl alcohol shifts the solution pH by up to 0.2 units. Additionally, using water that has been exposed to temperatures above 25 °C for prolonged periods can degrade the preservative, reducing its ability to maintain a stable pH. To avoid precipitation, verify storage conditions, gently swirl the vial after adding water, and allow the solution to equilibrate for several minutes before drawing the dose.
How can I verify the authenticity of a BAC Water Depot vial?
Each BAC Water Depot vial features a unique QR code that, when scanned, directs you to the online Certificate of Analysis for that specific lot number. The COA includes sterility test results, endotoxin levels, and benzyl alcohol concentration, all verified by three independent laboratories. Comparing the lot number on the vial with the COA ensures the product is genuine and has passed all required quality checks.
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