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🇬🇧 Dispatched from the UK
Vials assayed to > 99% HPLC purity
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Bacteriostatic water
Made in the UK Coming soon

Bacteriostatic water For reconstitution

Bacteriostatic water (bac water) for reconstituting peptides, coming soon to buy in the UK. Shipped with the rest of your order.

Not yet in stock This one is in the range but has not been released yet. Ask the lab and we will tell you the moment it lands. Ask the lab

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Research use only. Sold strictly for laboratory and research purposes, not for human or animal consumption, diagnosis, or treatment. Purchasers must be 18 or older.

Same-day UK dispatch on weekday orders before 2pm.
Free UK shipping over £100, tracked, next working day.
Cold-chain packed: sealed foil pouch, gel packs, plain outer box.
Batch-specific certificate of analysis included.

Certificate of analysis

Independently assayed, every batch

View certificates

Why bacteriostatic water

Everything in the range ships pre-mixed, so most orders never need it. It is here for researchers working with lyophilised peptides from elsewhere.

Specifications −
PresentationSealed vial
UseReconstitution of lyophilised peptides
StorageStore as directed on the label. Discard after the period stated once opened.
Description +
Applications in research +
Precautions & notes +

How we ship it

Every pre-mixed vial leaves the UK cold and arrives in a plain box. Refrigerate on arrival at 2–8°C.

Chilled packing

Chilled

Vials travel with frozen gel packs inside a sealed foil pouch, which holds temperature for roughly seven days in transit.

Insulated packing

Insulated

The pouch sits inside a wool-lined envelope, so the cold chain survives a normal courier journey.

Discreet packing

Discreet

Plain outer box with no branding and nothing on the label that names the contents.

Same-day dispatch

Order before 2pm, Monday to Friday.

Free over £100

Tracked UK delivery, next working day.

2–8°C on arrival

Refrigerate as soon as the parcel lands.

Bacteriostatic water: research FAQs

What is bacteriostatic water?

Sterile water with 0.9% benzyl alcohol added as a preservative. The preservative stops bacteria multiplying, so a vial can be drawn from more than once. It is usually shortened to bac water.

Is it the same as sterile water?

No. Sterile water has no preservative and is single-use. A peptide reconstituted with bacteriostatic water keeps for weeks under refrigeration; with sterile water, days.

Do I need it for your peptides?

No. Everything in the range ships pre-mixed and ready to use. Bacteriostatic water is only needed for lyophilised peptides bought elsewhere.

When will it be available?

It is in the range but not yet released. Send us a message and we will tell you the moment it lands.

How should it be stored?

Refrigerate at 2–8°C as soon as the parcel arrives and keep it out of direct light. Do not freeze: freeze-thaw cycling damages peptides already in solution.

How is it shipped?

Cold-chain packed in a sealed foil pouch with gel packs, inside a plain outer box with nothing on the label that names the contents. Same-day dispatch on weekday orders before 2pm.

Research guides

What is bacteriostatic water? Where to buy bacteriostatic water Peptide calculator Are peptides legal in the UK? Buying research peptides in the UK Storing peptides Reading a batch certificate Cold chain and unboxing Aseptic handling in the lab

Disclaimer: Products sold on this website are intended for research and laboratory use only. They are not intended for human or animal consumption. Purchasers must be at least 18 years of age. By using this site, you agree to our terms and conditions.

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