Buy Bacteriostatic Water UK
Benzyl alcohol in sterile water, which is what makes it re-enterable. 10ml and 30ml. Research use only.
from £5.492 options
- In stock Ships from the UK
- Same-day dispatch Order before 2pm
- Tracked delivery Free over £75
- Certificate of analysis On request
Bacteriostatic Water is on the shelf at diluent.co.uk, held in British stock rather than ordered in, priced from £5.49 for the 10ml vial. It comes in 2 strengths, 10ml, 30ml, as vial. A weekday order placed before 2pm goes out the same day, tracked, boxed with nothing on the outside about the contents.
Shipping from inside the country is what removes the customs step: no clearance, no import charge, nothing sitting at a border. Purity is ≥99% by HPLC on every batch, and the certificate for the lot you are sent is yours on request against the number on the label.
Delivery runs £4.95, free above £75, tracked start to finish. See how ordering works.
Choose your Bacteriostatic Water
2 options
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What is Bacteriostatic Water?
Sterile water carrying benzyl alcohol. That alcohol is a bacteriostatic preservative, and it is the single reason a container can be gone into more than once.
Specification
| Contents | Sterile water with benzyl alcohol |
|---|---|
| Preservative | Benzyl alcohol |
| Sizes | 10ml, 30ml |
| Storage | Room temperature, out of direct light |
| Certificate | On request, against the batch number |
How is it different from water for injection?
| Liquid | Preservative |
|---|---|
| Bacteriostatic water | Benzyl alcohol |
| Water for injection | None |
| Sodium chloride 0.9% | None |
What else contains it?
A bottle goes into every starter kit, next to the vial.
Where and how to buy Bacteriostatic Water in the UK
How do you order?
Pick a strength from the table, put it in the basket and check out. There is no account to set up. The confirmation reaches you straight away and the payment details follow by email, because no card is taken on the site.
Why does UK stock matter?
The Bacteriostatic Water you order leaves a warehouse in Britain. That means no customs step, no import charge and no days lost in transit from abroad. Before 2pm on a working day and it is collected that afternoon, tracked, in an outer box that gives nothing away.
What arrives in the box?
| Purity | ≥99%, by HPLC |
|---|---|
| Labelling | Compound, strength, format, purity, research-use statement and a batch number |
| Certificate of analysis | On request, matched to your batch number |
| Delivery | Tracked, UK only. £4.95, free over £75 |
| Returns | 14 days on unopened, sealed items, terms |
Storing Bacteriostatic Water
| Sealed vial | Somewhere cool, dry and dark. For anything long term, the freezer. |
|---|---|
| Once reconstituted | Fridge, standing upright, away from light. Never freeze it once mixed. |
How long does it keep?
| Stored as | Keeps for |
|---|---|
| Sealed, frozen at −20 °C | Years. Nothing holds a lyophilised peptide better than this |
| Sealed, refrigerated at 2–8 °C | Months |
| Sealed, at room temperature | Weeks. Fine while it is in the post, not a place to keep it |
| Reconstituted, refrigerated | Think weeks, not months. Four weeks is the number most people work to once bacteriostatic water is in, which is exactly what its preservative is there for |
| Reconstituted, frozen | Best avoided. Ice crystals tear at peptides, and every freeze–thaw round makes it worse |
Treat these as the usual numbers for lyophilised peptides, not a stability result measured on one batch. Cold and dry buys time; moisture, heat, light and being shaken about take it away. Ask and we will send the batch certificate of analysis.
Is Bacteriostatic Water legal in the UK?
We sell Bacteriostatic Water as an unlicensed research compound, for laboratory research use only. There is no UK marketing authorisation behind it, it is not a licensed medicine, and it is not for human use, veterinary use or food.
Nothing of this kind is a controlled drug, and selling it as laboratory material is lawful. Selling or marketing it for people to take is not. That line is the reason you will not find a dose, a protocol, a route, a frequency or a medical claim anywhere on this site, and the reason asking for one by email gets the same answer.
A few molecules in this range also appear inside a licensed medicine sold under a brand name. That authorisation belongs to the finished product it was granted for; it does not follow the molecule anywhere else. Full terms.
Bacteriostatic Water questions
What sizes do you stock?
Two bottles: 10ml and 30ml.
Where can I buy Bacteriostatic Water in the UK?
bacteriostatic water is available in the UK from diluent.co.uk, from £5.49, supplied as vials. Kept here, so the journey is shelf to door and nothing more. No customs, no surcharge. It turns up as freeze-dried powder, so the concentration is yours to set when you mix it. It also turns up inside 3 other products we sell. Get the order in before 2pm on a weekday and it leaves that day, tracked, plainly packaged. Batches go to a third-party lab and come back at ≥99% by HPLC, and the certificate for yours is there if you ask, see how to order.
How much does Bacteriostatic Water cost?
It starts at £5.49 for the 10ml. 2 options in all, each with its own price and its own rate per milligram. Postage runs £4.95, and nothing at all above £75.
What purity is your Bacteriostatic Water, and can I see a certificate?
≥99%, measured by HPLC. Quote the batch number on your label and we will send the certificate of analysis for that lot. If you would rather see where current stock sits before you commit, ask and we will tell you.