Bacteriostatic Water

Bacteriostatic and sterile waters for reconstituting lyophilised research peptides. 2 compounds in local stock, each with a batch Certificate of Analysis, delivered in 2–4 days.

Popular for: reconstitution of any lyophilised compound in our catalog.

2in stock

₡4,503from, per vial

−20%on 10+ vials

lab_profileCOA on most productsac_unitStored at 2–8 °Clocal_shipping2–4 day deliveryredeemFree BAC Water

Lab suppliesBAC Water

₡4,503per vial

Lab suppliesAA Water

₡6,754per vial

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Stocking up on bacteriostatic water?15% off 5+ vials, 20% off 10+ of the same product. Applied automatically.

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Buying bacteriostatic water in Costa Rica

Every compound in this category is held in local stock in Costa Rica, so there's no customs delay and no import fee. Vials are lyophilised (or liquid, where stated), stored at 2–8 °C on site from arrival to dispatch, and shipped with tracking in 2–4 days.

Most products are independently tested before sale. You'll find their Certificates of Analysis in our COA database, and we'll send the COA for your exact batch on request.

Most-ordered in this category: BAC Water.

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The Peptides Costa Rica promise

Every vial is stored cold and delivered fast. If a vial arrives damaged or doesn't match your order, tell us within 7 days with a photo and we replace it. No arguments.

Bacteriostatic Water FAQ

Bacteriostatic and sterile waters for reconstituting lyophilised research peptides.

From ₡4,503 per vial. 15% off 5+ vials and 20% off 10+ of the same product, applied automatically.

Yes. Most products are tested by an independent laboratory before sale, and their Certificates of Analysis are published in our COA database.

2–4 days anywhere in Costa Rica, from our own cold storage. No customs or import fees.

No. These products are supplied for laboratory research only. We don't provide dosing, protocols or medical advice.

Bacteriostatic water, usually shortened to BAC water, is sterile water containing benzyl alcohol as a preservative. That preservative is what lets a vial be punctured more than once without the contents being compromised, which is why it is the standard fluid for reconstituting lyophilized peptides in a laboratory. Peptides Costa Rica includes bacteriostatic water with every peptide order at no extra cost. It is supplied strictly for research use only and is not for human or veterinary use.

Bacteriostatic Water for Peptide Research Preparation

Bacteriostatic Water, also known as BAC Water, is commonly used in research settings as a support solution for peptide preparation and laboratory handling.

The preservative in bacteriostatic water is benzyl alcohol, usually at 0.9%. It stops bacteria growing inside the vial, so the same vial can be drawn from more than once. That is the practical difference between it and plain sterile water, which is single-use.

In a laboratory workflow it is the fluid used to bring a lyophilized peptide back into solution, and to dilute a solution that is too concentrated to work with. Use stays within laboratory research environments.

Explore BAC Water

Bacteriostatic water is included with every peptide order, so there is nothing extra to add to your cart for reconstitution.

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How Bacteriostatic Water Is Used

Bacteriostatic water does one job: it turns a dry peptide into a solution that can be measured and worked with, and thins that solution when a protocol calls for a lower concentration.

Typical uses:

Our peptide vials hold 3 ml, so reconstitution volumes stay within that.

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Get In Touch

Questions about bacteriostatic water, vial sizes, or how much comes with an order? Our team can confirm what is in stock, what your order includes, how to store it once a vial is opened, and delivery timing for your province.

Bacteriostatic Water for Laboratory Research

Bacteriostatic water is a consumable, not a compound. It has no activity of its own and is not studied for an effect. It is the fluid that makes a dry peptide workable.

Store unopened vials at room temperature and out of direct light, and do not freeze them. Once a vial has been punctured, date it and follow the discard period on the label — 28 days is the usual figure for a multiple-dose container. Bacteriostatic water is not for human consumption, medical treatment, clinical use or veterinary application.

scienceReconstitutionThe fluid used to bring a lyophilized peptide vial back into solution.

historyControlled DilutionUsed to dilute a prepared solution down to a lower working concentration.

lab_profileMultiple DrawsThe benzyl alcohol preservative is what makes repeat withdrawals from one vial possible.

inventoryLaboratory ConsumableCommonly used as a support product in peptide research environments.A standard item in peptide workflows, carrying no activity of its own.

Who Needs Bacteriostatic Water

Bacteriostatic water is bought by anyone reconstituting lyophilized material, which in practice means most peptide customers.

It is commonly used for:

Frequently Asked Questions

Want to know more about how BAC water is used in peptide workflows? Here are answers to the most common questions regarding BAC water and peptides:

Bacteriostatic water is sterile water containing benzyl alcohol, usually at 0.9%, as a preservative. The preservative stops bacteria growing inside the vial, which means the vial can be punctured and drawn from more than once rather than being discarded after a single use. In peptide work it is the standard fluid for reconstituting lyophilized material and for diluting a solution that is too concentrated. It is a laboratory consumable with no activity of its own, supplied for research use only.

Sterile water for injection contains no preservative. It is intended for single use, because once the seal is broken there is nothing preventing bacterial growth in what remains. Bacteriostatic water is supplied in a multiple-dose container precisely because the benzyl alcohol allows repeated withdrawals. Distilled or deionised water is a third thing again — it is not sterile and is not used for preparing solutions. The choice comes down to whether the vial will be accessed once or several times.

This depends on the concentration a protocol calls for, but the physical limit matters more than most people expect. Our peptide vials hold 3 ml, so any reconstitution volume has to fall within that. Several reconstitution calculators online suggest 4 ml or 5 ml, which would require decanting into a second container. Our Peptide Reconstitution Calculator is set up for the vial sizes we actually supply.

Store unopened vials at room temperature, out of direct light, and do not freeze them. Once a vial has been punctured, write the date on it and follow the discard period given on the label — 28 days is the usual figure for a multiple-dose container. Discard a vial early if the solution looks cloudy, discolored or has anything visible in it.

No. It is included with every peptide order at no extra cost, so there is nothing to add to your cart for a standard order. Our team can confirm the vial size included with a given order before you pay. If you need extra BAC water vials, get in touch with our team now.

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We take pride in the trust and loyalty of our customers. Numerous individuals across Costa Rica have experienced transformative results with our peptide products. Our testimonials section is a living showcase of positive outcomes, featuring stories of enhanced energy, impressive muscle growth, and dramatic reductions in body fat.

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Bacteriostatic Water Included With Peptide Orders Across Costa Rica

Peptides Costa Rica includes bacteriostatic water with qualifying peptide orders delivered throughout all seven provinces. It is included so that the peptide you order arrives with the fluid needed to reconstitute it, at no extra cost. Extra vials can be bought on their own if a study needs more than the order includes. Everything is supplied for research use only.

Customers can confirm peptide availability, vial size, order details and local delivery arrangements with our team before completing payment.

Peptide and Bacteriostatic Water Delivery Across Costa Rica

The vial size included can depend on the peptide order. Contact our team to confirm the selected products, quantity, final price, payment method, the bacteriostatic water included, and the delivery location before ordering.