What is bacteriostatic water used for?

Bacteriostatic water is the sterile diluent used to reconstitute lyophilized (freeze-dried) research peptides. The 0.9% benzyl alcohol is bacteriostatic, so a vial can be drawn from across multiple sessions rather than a single use. For laboratory research use only.

As a 3 mL vial of 0.9% benzyl alcohol in water for injection, EU-stocked and shipped with your order. It should be used only in an appropriate laboratory setting following your own validated protocol.

Bacteriostatic Water 3 mL

Bacteriostatic Water

Sterile diluent for reconstituting lyophilized peptides · 3 mL · 0.9% benzyl alcohol

0.9% benzyl alcohol in water for injection · multi-draw

The standard diluent researchers use to bring lyophilized peptides back into solution. The 0.9% benzyl alcohol is bacteriostatic — it lets a vial be drawn from across multiple sessions rather than a single use.

Per vial · with your Retatrutide order€5 / 3 mL

Add it to your basket next to your Retatrutide.

As a kit · under kit ordersfrom €50

10 or 30 × 3 mL vials, added to the same basket like every other kit.

In stock

Plain, unbranded packaging. No product names, no logos — nothing on the outside indicating what is inside. Tracked to a DPD Locker or your address.

Guaranteed delivery. If your order doesn't reach you, we ship it again free — lost, damaged or stolen.

Sterile-filtered · EU-stocked · ships with your peptide order · For laboratory research use only. Not for human or veterinary use.

What it's for

Research peptides ship as a freeze-dried (lyophilized) powder for stability. Before they can be measured or studied they have to be reconstituted — dissolved back into a liquid. Bacteriostatic water is the diluent of choice: the 0.9% benzyl alcohol suppresses bacterial growth, so a reconstituted vial stays usable for weeks in the fridge instead of a single sitting.

One 3 mL vial reconstitutes several peptide vials, depending on the concentration you're targeting. Use the reconstitution calculator to work out the exact draw for your dose.

Type	Bacteriostatic water for reconstitution
Volume	3 mL
Preservative	0.9% benzyl alcohol
Sterility	Sterile-filtered
Storage	Room temperature; refrigerate after opening
Use	Laboratory reconstitution of lyophilized peptides

Type

Bacteriostatic water for reconstitution

Volume

3 mL

Preservative

0.9% benzyl alcohol

Sterility

Sterile-filtered

Storage

Room temperature; refrigerate after opening

Use

Laboratory reconstitution of lyophilized peptides

Bacteriostatic Water — questions

Bacteriostatic vs sterile water — what's the difference?

Sterile water has no preservative, so a reconstituted vial should be used quickly. Bacteriostatic water adds 0.9% benzyl alcohol, which suppresses microbial growth and allows multiple draws from the same vial over time — the reason it's the lab standard for multi-use peptide vials.

How much do I use?

It depends on the concentration you want. More diluent means a lower concentration per unit drawn. The reconstitution calculator converts any target dose into an exact syringe draw.

Does it ship with my Retatrutide?

Yes — add it at checkout and it ships in the same box, under the same free-shipping-over-€200 threshold.

Researcher verification

Bacteriostatic Water

What it's for

Specifications

Bacteriostatic Water — questions

Everything you need to reconstitute.

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