30 mL total · 3 sealed vials
Bacteriostatic Water 30 mL Set (3 × 10 mL vials)
30 mL of research-grade bacteriostatic water, supplied as three sealed 10 mL Type I borosilicate vials (0.9% benzyl alcohol) rather than one open bottle. Made in the USA in an ISO 9001:2015 registered facility; every lot is tested by an independent third-party laboratory and the results are on that lot's Certificate of Analysis.
- USP <71> sterility tested per lot
- USP <85> endotoxin ≤ 0.25 EU/mL
- QR code to the lot CoA on every vial
- Research use only
Direct Answer
Looking for 30 mL of bacteriostatic water? BAC Water Depot supplies it as 3 × 10 mL sealed vials for $29.97 — not a single 30 mL vial. Each vial stays unopened at room temperature until you need it, and each carries its own lot number and Certificate of Analysis.
Three sealed vials versus one open bottle
The pharmacy-style 30 mL bottle is one container. The moment it is punctured, the 28-day clock starts for all 30 mL, and the whole bottle has to live in the refrigerator from then on. Splitting the same volume across three 10 mL vials changes that: once one vial is punctured, refrigerate it at 2–8 °C and discard it 28 days after the first puncture, while the other two remain sealed on the shelf at room temperature. Nothing is thrown away because a large bottle was opened for a small job.
The vials are the same product we sell by the single, in packs of 10 and 25, and in bulk: 10 mL Type I borosilicate glass, 0.9% benzyl alcohol as the bacteriostatic agent, a tamper-evident closure, and a label that carries the lot number, the expiration date and a QR code. Scanning the code opens that lot's Certificate of Analysis, so a researcher can check the sterility and endotoxin results for the exact vial in hand.
Because the set is three ordinary vials, nothing about ordering changes. The cart shows three single vials, checkout offers the same add-on vials and free-vial bundles it offers any single-vial order, and shipping is the same flat $15.99 (free over $250) with overnight available.
Size options and per-vial pricing
| Option | Total volume | Price | Per vial |
|---|---|---|---|
| Single 10 mL vial | 10 mL | $9.99 | $9.99 |
| 30 mL set (3 × 10 mL) | 30 mL | $29.97 | $9.99 |
| 10-vial pack | 100 mL | $74.99 | $7.50 |
Need more than 30 mL at a time? The product page lists every size from a single vial to 300-vial cases, with per-vial pricing that falls as the quantity rises, and the bulk supply program covers recurring institutional orders.
What is tested on every lot
Each lot's Certificate of Analysis reports: sterility by USP <71> (no growth, 14-day membrane filtration); bacterial endotoxin by USP <85> LAL (≤ 0.25 EU/mL); microbial analysis by validated PCR assay (no detectable microbial DNA); bacteriostatic effectiveness by USP <51> (Category 1B); benzyl alcohol net content by HPLC-UV (0.90% ± 5%) and identity; pH (USP <791>); subvisible particulates (USP <788>); container integrity (USP <1207>); and the tamper-evident closure.
Read the newest batch on the Certificate of Analysis page, or look up any lot by number with the batch lookup. Customer reviews are on the reviews page.
Frequently Asked Questions
Is this a single 30 mL vial?
No. The 30 mL set is three separate, sealed 10 mL vials of the same USA-made bacteriostatic water we sell individually — 30 mL in total. We do not currently fill a 30 mL vial. Each vial is its own multi-dose container with its own tamper-evident closure and its own lot number printed on the label.
Why buy three 10 mL vials instead of one 30 mL vial?
Once a multi-dose vial is punctured it must be refrigerated at 2–8 °C and discarded after 28 days, whatever its size. Three sealed 10 mL vials let you open one at a time, so the other two stay unopened at room temperature until you need them. A single 30 mL vial starts its 28-day clock the first time it is used.
How much does the set cost per mL?
$29.97 for 30 mL is $1.00 per mL — the same per-vial price as buying single vials ($9.99 each). A 10-vial pack brings the per-vial price down to $7.50 ($74.99 for 100 mL).
Does the set ship the same day?
Yes. Orders placed before 2:00 PM CT Monday through Friday ship the same business day by USPS Priority Mail (USPS estimates 1–3 business days) for $15.99, free on orders over $250. Overnight by USPS Priority Mail Express is available at checkout for $45.99 or $1.50 per vial, whichever is higher. US addresses only.
Does each vial in the set come with a Certificate of Analysis?
Yes. Every vial carries a lot number and a QR code that opens that lot's Certificate of Analysis at bacwaterdepot.com/coa. The CoA reports the independent third-party results for that lot: USP <71> sterility, USP <85> bacterial endotoxin (≤ 0.25 EU/mL), microbial analysis by validated PCR assay, USP <51> bacteriostatic effectiveness, benzyl alcohol content by HPLC-UV (0.90% ± 5%), pH, subvisible particulates and container integrity.
How should the unopened vials be stored?
Unopened vials store at controlled room temperature, 15–30 °C (59–86 °F), out of direct sunlight. No refrigeration and no cold-chain shipping are needed. Once a vial is punctured, refrigerate it at 2–8 °C and discard it after 28 days. The expiration date is printed on the label and on the CoA.
Can I add more vials at checkout?
Yes. Because the set is three single vials, checkout offers the usual single-vial add-ons: extra vials at a graduated discount, and the free-vial bundles. If you need more than a few vials regularly, the 10-vial and 25-vial packs on the product page are cheaper per vial.
30 mL, three sealed vials, $29.97
Orders before 2:00 PM CT Monday–Friday ship the same business day. For research and laboratory use only — not for human or veterinary use.