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Sterile Water 10 ml

Original price was: 9,99 €.Current price is: 7,99 €. with VAT

Sterile water for injection (WfI) is purified and sterilized water free of any preservatives or additives. It is the right choice wherever benzyl alcohol would be a hindrance—that is, with BA-sensitive peptides and in short-term research protocols.

Preservative-free – compatible with all peptides, including BA-sensitive ones
Single-use; solution stable for 2–3 days at 4 °C; pH 5.0–7.0
Shipped within 48 hours

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Quantity discount

Quantity	Price	% Discount
7+	7,19 €	10%
4+	7,59 €	5%

Category: Laboratory Accessories

All products are sold exclusively for the purpose of scientific research and development.
The chemical substances may not be used as a medicine, drug, active substance, medical device, cosmetic product, substance for the manufacture of a cosmetic product, or as a substance for human consumption, i.e. as a food or nutritional supplement, or in any other similar way on humans or animals.

All customers MUST be at least 18 years of age to purchase our products.

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Description

What is sterile water for injection (WfI)?

Sterile water for injection (WfI – Water for Injection) is purified, sterilized water without any added preservatives or additives. It is manufactured in accordance with pharmaceutical standards that guarantee the absence of microorganisms, endotoxins, and chemical impurities.

Unlike ordinary distilled water, WfI meets the strict purity criteria required for research protocols involving biologically active compounds, such as lyophilized peptides.

Sterile vs. Bacteriostatic Water – A Comparison

Parameter	Sterile Water (WfI)	Bacteriostatic water (BWfI)
Preservative	None	0.9% benzyl alcohol
How to Use the Bottle	Single-use	Multi-dose (repeat)
Stability of the solution after reconstitution	2–3 days at 4 °C	28–30 days at 4 °C
Compatibility	All peptides, including BA-sensitive ones	Most peptides
pH	5.0–7.0	4.5–7.0
Ideal for	Short-term protocols, BA-sensitive substances	Long-term protocols, repeated sampling

When to Use Sterile Water in Research

Protocols with BA-sensitive peptides

Some peptides exhibit reduced stability or interference when in contact with benzyl alcohol. In these cases, preservative-free sterile water (WfI) is the only appropriate choice. If you are unsure about the compatibility of a specific peptide with BA, consult the available literature or use sterile water as a safer alternative.

Short-term research experiments

For experiments in which the entire reconstituted volume is consumed within 24–72 hours, the antimicrobial protection provided by benzyl alcohol offers no research advantage. In this case, sterile water is the more logical choice, both economically and biochemically.

For detailed instructions on reconstitution, including how to choose the right solvent, see “How to Reconstitute a Lyophilized Peptide – Research Protocol” and “Dosage Calculator” – jacked.sk

Technical Specifications

Parameter	Value
Volume	10 ml
Form	Sterile water, preservative-free
Preservative	None
pH	5.0–7.0
Sterility	Sterilized, hermetically sealed
Type	WfI – Water for Injection
Storage	Room temperature; protect from freezing

Frequently Asked Questions (FAQ)

Why isn't it enough to use distilled or boiled water?

Distilled water is not sterile—it has not undergone a sterilization process that guarantees the absence of microorganisms and endotoxins. Boiled water may be sterile for a short time, but it is not pharmaceutically pure. For research protocols involving peptides, WfI or BWfI that meets pharmaceutical purity standards is essential.

When should sterile water be preferred over bacteriostatic water?

Prefer sterile water (WfI) in three cases: (1) if your peptide may be sensitive to benzyl alcohol, (2) if you will use the entire reconstituted volume within 2–3 days, (3) if the research protocol explicitly prohibits the use of antimicrobial preservatives.

How long is the reconstituted solution stable when mixed with sterile water?

After reconstitution with sterile water, store the peptide solution at 2–8 °C and use it ideally within 24 hours, or within 2–3 days at most. Without an antimicrobial preservative, the risk of contamination after opening is higher than with bacteriostatic water.

Can I use the same bottle of sterile water more than once?

No. Sterile water without preservatives (WfI) is intended for single-use only. After piercing the stopper and withdrawing the first volume, the remainder must be used up during a single experiment or discarded. For repeated withdrawals, use bacteriostatic water.

What is the difference between WfI and BWfI?

WfI (Water for Injection) is sterile water without preservatives—single-use, with a maximum solution stability of 2–3 days. BWfI (Bacteriostatic Water for Injection) contains 0.9% benzyl alcohol—multi-dose, with a solution stability of 28–30 days. For a detailed comparison, see the Bacteriostatic Water product page.

⚠️ Important Notice

Sterile water is part of the laboratory equipment used for scientific research. All products on jacked.sk are intended exclusively for scientific research purposes. They are not medicines, drugs, or dietary supplements, nor are they intended for human use. Sale restricted to individuals over 18 years of age.