Sourcing Guide
Bacteriostatic Water Case
You can purchase BAC Water Depot bacteriostatic water directly from the company’s website. Single vials are $9.99, and bulk pricing is available for larger orders. All shipments are fulfilled from Dallas, TX, and orders placed before 2:00 PM CT Monday–Friday ship the same business day. The product is research‑use‑only and comes with a per‑lot Certificate of Analysis.
- ISO 9001:2015 US facility
- USP <71> sterility tested
- Per-lot Certificate of Analysis
- Same-day US shipping
Direct Answer
BAC Water Depot supplies research‑use‑only bacteriostatic water in 10 mL Type I borosilicate vials at $9.99 each, containing 0.9 % benzyl alcohol and meeting USP <71> sterility, USP <85> endotoxin (≤0.25 EU/mL), and USP <51> bacteriostatic effectiveness specifications.
What are the quality control tests performed on each lot of BAC Water Depot bacteriostatic water?
Each lot undergoes USP <71> sterility testing via 14‑day membrane filtration, confirming no microbial growth. USP <85> bacterial endotoxin testing using the LAL method ensures endotoxin levels are ≤ 0.25 EU/mL. A validated PCR assay checks for microbial DNA, guaranteeing no detectable contamination, and USP <51> bacteriostatic effectiveness is verified as Category 1B. Results are posted on the lot’s Certificate of Analysis, accessible via a QR code on the vial label, providing transparent, third‑party documented proof of compliance.
Additional analyses include benzyl alcohol content by HPLC‑UV (0.90 % ± 5 %), pH measurement per USP <791>, subvisible particulate count per USP <788>, and container integrity testing per USP <1207>. The tamper‑evident closure is also inspected. Any vial failing any parameter is rejected, preventing batch‑level failures such as compromised sterility or incorrect preservative concentration.
How should researchers store and handle BAC Water Depot bacteriostatic water after opening?
Unopened vials must be kept at controlled room temperature of 15–30 °C, away from direct sunlight, with no refrigeration or cold‑chain requirements. Once the vial is punctured, it should be refrigerated at 2–8 °C and used within 28 days; after this period the product must be discarded. The expiration date is printed on both the label and the Certificate of Analysis, ensuring clear end‑of‑life tracking for laboratory inventory management.
Common handling errors include leaving opened vials at ambient temperature, which can allow microbial proliferation despite the benzyl alcohol preservative, and exceeding the 28‑day post‑puncture window, leading to loss of sterility. To avoid these failures, researchers should label the date of first puncture on the vial, store it in a dedicated 2–8 °C refrigerator, and perform a visual inspection for particulates before each use.
What shipping options and costs apply to bulk orders of BAC Water Depot bacteriostatic water?
Standard shipping uses USPS Priority Mail at a flat $15.99 and typically arrives in 1–3 business days for U.S. addresses. Orders exceeding $250 (up to 100 vials) qualify for free standard shipping. For case orders over 100 vials, a flat $34.99 shipping fee applies regardless of quantity. All shipments are dispatched from a Dallas, TX fulfillment center the same business day for orders placed before 2:00 PM CT Monday–Friday, ensuring rapid availability for time‑sensitive research projects.
The express option, USPS Priority Mail Express, costs $45.99 or $1.50 per vial, whichever is higher, and delivers in 1–2 business days for most U.S. destinations. Researchers should avoid selecting the express service for routine restocking to control costs. Failure to meet the 2:00 PM cutoff results in next‑day processing, so plan order timing accordingly to prevent delays in experimental timelines.
Typical dilution calculations using BAC Water Depot bacteriostatic water (research‑use‑only)
| Vial amount (mL) | BAC water added (mL) | Resulting concentration (mg/mL) |
|---|---|---|
| 1 mL peptide stock (10 mg) | 9 mL | 1.00 |
| 2 mL peptide stock (20 mg) | 8 mL | 2.00 |
| 5 mL peptide stock (50 mg) | 5 mL | 5.00 |
| 10 mL peptide stock (100 mg) | 0 mL | 10.00 |
Key Facts
- BAC Water Depot bacteriostatic water is manufactured in an ISO 9001:2015‑registered facility in the USA.
- Each 10 mL vial contains 0.9 % benzyl alcohol as a bacteriostatic preservative.
- Lot‑specific Certificates of Analysis are available via a QR code on each vial.
- USP <71> sterility testing shows no microbial growth after a 14‑day membrane filtration assay.
- Pricing starts at $9.99 per vial, with bulk discounts down to $6.49 per vial for orders of 500+.
Frequently Asked Questions
Where can I buy BAC Water Depot bacteriostatic water for peptide research?
You can purchase BAC Water Depot bacteriostatic water directly from the company’s website. Single vials are $9.99, and bulk pricing is available for larger orders. All shipments are fulfilled from Dallas, TX, and orders placed before 2:00 PM CT Monday–Friday ship the same business day. The product is research‑use‑only and comes with a per‑lot Certificate of Analysis.
Is BAC Water Depot bacteriostatic water USP certified?
Yes, each lot is tested to USP standards. USP <71> sterility testing confirms no growth, USP <85> endotoxin testing limits endotoxin to ≤ 0.25 EU/mL, and USP <51> bacteriostatic effectiveness meets Category 1B criteria. Results are published on the lot’s Certificate of Analysis, which can be accessed via the QR code on the vial label.
What is the benzyl alcohol concentration in BAC Water Depot bacteriostatic water?
The product contains 0.9 % benzyl alcohol, verified by HPLC‑UV with a tolerance of ±5 %. This concentration provides bacteriostatic activity while remaining compatible with most laboratory reagents. The net content and identity are documented on each Certificate of Analysis.
How long can I store opened BAC Water Depot bacteriostatic water?
After puncturing, the vial should be refrigerated at 2–8 °C and used within 28 days. Any opened vial kept at room temperature beyond this period risks microbial growth despite the preservative. Discard the vial after 28 days and replace it with a fresh lot to maintain sterility.
What are the shipping costs for a 25‑vial case of BAC Water Depot bacteriostatic water?
A 25‑vial case costs $174.99, which is $6.99 per vial. Standard USPS Priority Mail shipping is $15.99 flat, but because the order exceeds $250, shipping is free. Orders placed before the 2:00 PM CT cutoff ship the same business day from Dallas, TX, typically arriving in 1–3 business days.
Can I get faster delivery for BAC Water Depot bacteriostatic water?
Yes, the express option uses USPS Priority Mail Express at $45.99 or $1.50 per vial, whichever is higher, delivering in 1–2 business days for most U.S. addresses. This service is optional and should be selected at checkout if you need the product quickly. Standard shipping remains the most cost‑effective choice for routine orders.
What quality documentation is provided with each lot of BAC Water Depot bacteriostatic water?
Each lot includes a Certificate of Analysis that details sterility (USP <71>), endotoxin levels (USP <85>), bacteriostatic effectiveness (USP <51>), benzyl alcohol content, pH, subvisible particulates, and container integrity. The CoA is generated by an independent third‑party laboratory and can be accessed by scanning the QR code on the vial label, linking to bacwaterdepot.com/coa/<lot-number>.
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