Colorless UV fluorescent tracer for leak detection

The colorless UV fluorescent tracer is an effective solution for locating a leak, tracking abnormal water flow or detecting an infiltration without visibly staining surfaces. Invisible to the naked eye and revealed under a UV lamp, it makes non-destructive diagnostics easier on water networks, pipes, roofs, terraces and waterproofing areas. At Fluotechnik, we offer a selection of colorless fluorescent tracers designed for professionals involved in leak detection, construction, maintenance, waterproofing and technical diagnostics.

Precise detection under UV light

More easily identify abnormal flow, micro-leaks and infiltrations, even when they are difficult to see under normal conditions.

Invisible to the naked eye

The tracer is designed to remain discreet on surfaces and only become visible during inspection under ultraviolet light.

Suitable for many water-related applications

Water network inspections, pipe leak detection, infiltration diagnosis, waterproofing tests and technical inspections.

Non-destructive method

A solution designed to support diagnostics without heavy dismantling, unnecessary damage or invasive intervention.

Expert technical support

Fluotechnik helps you choose the right colorless UV fluorescent tracer according to your application, substrate and working conditions.

Our range of colorless UV fluorescent tracers for water

To meet different leak detection, infiltration detection and UV inspection needs, Fluotechnik offers a selection of colorless fluorescent tracers specially designed for water network applications and areas to be tested. This range allows professionals to work in a variety of contexts, whether for waterproofing diagnostics, pipe inspections, micro-leak detection or technical building inspections. Each reference has been selected to provide strong visibility under UV light, easy on-site use and performance suited to professional requirements. You can therefore compare the different Fluotechnik colorless UV tracers according to your intervention method, the type of installation involved, the nature of the inspection to be carried out and the level of precision required to locate the leak or infiltration.

Colorless fluorescent tracers to detect water leaks without damaging installations

Colorless UV fluorescent tracers for water are used to locate a leak, track abnormal flow or highlight an infiltration as part of a non-destructive diagnostic process. Their main advantage is that they can be read under a UV lamp while remaining invisible to the naked eye, making them especially suitable when you need to work cleanly, without visible staining of surfaces or aesthetic alteration of materials. This category is intended for professionals who need to detect a leak on a water network, inspect a pipe, check waterproofing or analyse an infiltration on a roof, terrace or technical area. The fluorescent tracer is introduced into the circuit or applied depending on the intervention context, then observed under ultraviolet light to more easily identify the path of the liquid and the leak exit point. Choosing a colorless UV tracer for water is particularly relevant when visual discretion matters as much as diagnostic precision. While a coloured tracer may be preferred for immediate visibility, a colorless tracer is better suited to situations where the appearance of materials must be preserved, visible marks must be limited and leak detection must remain cleaner on site.

How do you use a colorless UV fluorescent tracer to detect a leak?

A colorless UV fluorescent tracer helps identify the path of water, track abnormal flow and locate a leak or infiltration more precisely. Used with a UV lamp, this detection method is appreciated for its ease of use and non-destructive nature. It allows professionals to work on a water network, a pipe or a waterproofing area without unnecessary breakage, while making the diagnostic process easier to interpret.

Step 1 - Introduce the tracer into the water circuit or onto the area to be inspected

The fluorescent tracer is injected into the water or applied according to the protocol suited to the situation. It can be used on a network, pipe, infiltration area, roof, terrace or any other installation where the aim is to understand the path of the water. The fluorescent liquid naturally follows the route taken by the flow.

Step 2 - Let the tracer circulate to reveal the leak path

Once diffused, the tracer follows the water through the circuit or the area concerned. This circulation helps reveal passage points, waterproofing defects, micro-leaks or infiltrations that are difficult to identify with the naked eye. This stage is particularly useful when the leak is intermittent, not very visible or located in a technically complex environment.

Step 3 - Observe the fluorescence under a UV lamp

The inspection is then carried out using a UV lamp, which reveals the fluorescence of the colorless tracer. Damp areas, leak exit points, abnormal flows or waterproofing defects become easier to identify. This ultraviolet reading saves time and improves inspection accuracy, especially on pipes, water networks and sensitive surfaces.

Step 4 - Identify the source of the problem and target the intervention

Once the leak or infiltration area has been identified, the intervention can be focused in the right place. This helps professionals avoid unnecessary investigations, non-essential openings and invasive operations. A colorless UV tracer is therefore an effective solution for carrying out clean, fast and accurate diagnostics without damaging installations.

Why choose a Fluotechnik colorless UV fluorescent tracer?

Choosing a fluorescent tracer suited to leak detection means gaining diagnostic accuracy, working comfort and better on-site readability. Fluotechnik selects solutions designed for professionals looking for an effective fluorescent liquid for water, easy to use and compatible with a non-destructive inspection approach. Our range combines visual discretion, UV performance and technical support to help you work in the best possible conditions.

Invisible to the naked eye, visible under UV

An ideal solution when you need to detect a leak or infiltration without visibly staining surfaces under normal conditions.

Designed for water leak detection

Tracers developed for water networks, pipes, waterproofing inspections and infiltration areas in building environments or technical maintenance.

Compatible with non-destructive diagnostics

The tracer helps locate a leak without heavy dismantling, unnecessary damage or invasive work on installations.

No visible marking under normal conditions of use

Using a colorless tracer allows clean work on surfaces where visual discretion is important.

Easy to use on site or during technical inspections

Its application is designed to simplify field inspections, with quick reading under a UV lamp.

Expert technical support

Our team helps you choose the right reference, the right application method and the UV equipment suited to your needs.

Made in France and Europe

Solutions selected with high standards to meet the quality expectations of professionals.

Products tested in real field conditions

References already used for leak detection, infiltration inspection and visual diagnostics in a wide variety of technical situations.

Colorless UV tracers on video: see detection in real conditions

Watch videos showing how colorless UV fluorescent tracers are used for leak detection, infiltration inspection and diagnostics under a UV lamp. These demonstrations help you better understand how the fluorescent liquid works, how it is read on site and its main applications on water networks, technical areas and waterproofing defects.

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Frequently asked questions about colorless UV fluorescent tracers for water

A colorless UV fluorescent tracer for water is a liquid used to identify a leak, infiltration or waterproofing defect without any visible staining to the naked eye. It becomes visible under a UV lamp, making it possible to follow the path of the water and more precisely locate the source of the problem.

This type of tracer is useful for checking a water network, a pipe, an infiltration area, a roof, a terrace or a technical installation when the goal is to carry out a clean, non-destructive diagnosis. It is particularly valuable for micro-leaks or flows that are difficult to visualise directly.

The tracer is introduced into the circuit or applied to the area being inspected. It circulates with the water, then an inspection under a UV lamp reveals the areas where the fluorescent liquid appears, accumulates or follows an abnormal path. This method helps locate the leak without heavy dismantling.

A colorless tracer remains invisible under normal light and is only revealed under UV, making it especially suitable for interventions where the appearance of the substrate must be preserved. A coloured tracer, by contrast, is immediately visible without a UV lamp. The choice therefore depends on the required level of discretion and the diagnostic context.

Yes, these tracers are designed for water-related applications and are used for leak detection, network inspections, technical checks and infiltration diagnostics. The right reference should then be selected according to the intended use and the working conditions.

The benefit of a colorless fluorescent tracer is precisely that it enables leak detection without visibly staining surfaces under normal conditions of use. It is therefore particularly suitable when a more discreet and cleaner diagnosis is required.

A UV lamp is required to properly visualise the tracer. Depending on the intervention context, suitable glasses may also improve reading comfort and visibility in certain areas.

Yes, in some technical contexts, several references or several fluorescent responses can be used to differentiate different areas or multiple circuits during the same diagnostic process. This advanced use can be relevant for more complex leak detection cases.

The most valuable feedback comes from our customers !

5 stars
4 stars
3 stars
2 stars
1 star
Very good choice and excellent product with responsive service.
DEIANA
28/02/2026
Top-quality products!
LANTOINE
26/02/2026
Very easy to use. Dissolves well in water and spreads gently on and in the water, clearly marking the location of the leak.
CHAMBON
25/02/2026
Very good product. We use it regularly for our missions. The red is a bit less visible than the others.
Cyril GERNEZ
19/02/2026
Everything is great, good product.
Rene LEIßLER
18/02/2026
We received the order quickly, and the product meets our expectations. Thank you!
CREUSOT
18/02/2026
This lamp is perfect for analyzing repaints on old paintings. Plus, delivery was very fast. Thank you and well done!
Frantz CHAIGNE
17/02/2026
Very good!
Pierre VERNY
12/02/2026
They may look unassuming—tiny even—but they do the job perfectly: if an air duct is blocked or functional, you’ll know right away!
KTI
11/02/2026
Fast delivery and excellent service!
Rene LEIßLER
05/02/2026
Effective tracer, perfectly meets the need!
Jean-Luc SERVAIS
05/02/2026
5 stars, top service and quality!
BG
04/02/2026
Perfect product.
André DECOSTER
04/02/2026
Very interesting product, excellent technical and commercial advice.
Claude GALANTE
30/01/2026
Excellent tracer, fast delivery.
Nicolas ROBBE
28/01/2026

The most valuable feedback comes from our customers!

5 stars
4 stars
3 stars
2 stars
1 stars
Very good choice and excellent product with responsive service.
DEIANA
28/02/2026
Top-quality products!
LANTOINE
26/02/2026
Very easy to use. Dissolves well in water and spreads gently on and in the water, clearly marking the location of the leak.
CHAMBON
25/02/2026
Very good product. We use it regularly for our missions. The red is a bit less visible than the others.
Cyril GERNEZ
19/02/2026
Everything is great, good product.
Rene LEIßLER
18/02/2026
We received the order quickly, and the product meets our expectations. Thank you!
CREUSOT
18/02/2026
This lamp is perfect for analyzing repaints on old paintings. Plus, delivery was very fast. Thank you and well done!
Frantz CHAIGNE
17/02/2026
Very good!
Pierre VERNY
12/02/2026
They may look unassuming—tiny even—but they do the job perfectly: if an air duct is blocked or functional, you’ll know right away!
KTI
11/02/2026
Fast delivery and excellent service!
Rene LEIßLER
05/02/2026
Effective tracer, perfectly meets the need!
Jean-Luc SERVAIS
05/02/2026
5 stars, top service and quality!
BG
04/02/2026
Perfect product.
André DECOSTER
04/02/2026
Very interesting product, excellent technical and commercial advice.
Claude GALANTE
30/01/2026
Excellent tracer, fast delivery.
Nicolas ROBBE
28/01/2026

They use our fluorescent tracers in the field

Nous utilisons régulièrement les produits FLUOTECHNIK pour nos recherches de fuite et en sommes très satisfaits. Les couleurs sont vives, bien visibles à l’œil nu et en photo. Les kits sont pratiques, complets et adaptés à toutes les situations. Un vrai plus en efficacité sur le terrain. Bravo à l’équipe FLUOTECHNIK !
Loïc ANDRE
Provence Solutions
Spécialiste des fuites, j’utilise les traceurs UV de Monsieur Paillet pour leur fiabilité et discrétion. Invisibles à l’œil nu mais nets sous UV, ils sont idéaux en milieu sensible. Les traceurs colorés permettent de différencier les réseaux. Les ballons obturateurs complètent bien l’ensemble. Monsieur Paillet se montre toujours disponible et de bon conseil.
Fabien DISCHINGER
Détecte Fuite Sàrl
Grâce au Pack Pro UV de Fluotechnik, mes diagnostics de fuites sont plus rapides et précis. Le coffret est complet, avec des traceurs colorés et incolores, deux lampes UV puissantes, et une valise solide très pratique sur le terrain. Le dosage des traceurs est simple et précis, ce qui me fait gagner un temps précieux. Je recommande vivement ce kit aux pros du bâtiment et de l'étanchéité.
Gilian BOUBRHI
Gsm Fuite
Anterior
Siguiente

Why use a colorless UV fluorescent tracer for water?

A colorless UV fluorescent tracer for water meets a very practical need: detecting a leak or infiltration without making surfaces visibly coloured. This characteristic makes it especially relevant for professionals who need to work cleanly on sensitive, visible or technical environments. Under normal light, the product remains discreet. Under a UV lamp, however, it becomes a real reading tool for tracking abnormal flow, identifying a passage point or spotting a micro-leak. In many cases, the challenge does not only come from the leak itself, but from the fact that it is diffuse, intermittent or located in a hard-to-access area. Using a fluorescent liquid then improves diagnostic precision and limits unnecessary investigations. It is also a way to save time on site while maintaining a non-destructive inspection method.

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When should a fluorescent liquid be used for leak detection?

Colorless UV tracers for water can be used in many professional contexts related to leak detection and infiltration diagnosis. They are particularly relevant for checking water networks, pipes, waterproofing areas, roofs, terraces or structures where abnormal water circulation is suspected. They are also useful in maintenance operations, technical inspections, waterproofing defect checks and building diagnostics. When a leak is difficult to locate visually, when moisture moves or when the real entry point is not obvious, the fluorescent tracer helps better understand the path of the fluid. This visual reading under UV then helps direct the intervention to the right location.

How does detection under a UV lamp work?

The principle is simple. The tracer is introduced into the water or into the area to be tested, then circulates with the relevant fluid. Wherever the water goes, the tracer goes as well. Once circulation has taken place, inspection under a UV lamp reveals the fluorescence and makes it easier to visualise leak exit points, infiltration areas or abnormal paths. This method is valued because it allows professionals to work without breaking things open immediately, without multiplying exploratory openings and without damaging installations before the area to be treated has been located more precisely. For professionals in leak detection, waterproofing, construction or maintenance, it is a valuable way to improve analysis reliability while keeping interventions cleaner.

Why choose a colorless tracer rather than a coloured tracer?

The choice between a colorless tracer and a coloured tracer depends above all on the intervention context. A coloured tracer may be preferred when immediate visibility to the naked eye is required. By contrast, a colorless UV fluorescent tracer will often be the better option when visual discretion is important, for example on sensitive substrates, finished environments or areas where any visible staining must be avoided.

Which Fluotechnik tracer should you choose for your needs?

The right choice depends on the type of installation to be inspected, the level of visibility required, the intervention method and the professional context. If your priority is to carry out discreet, clean and non-destructive water leak detection, a colorless UV fluorescent tracer is especially suitable. If you are instead looking for a coloured solution that is directly visible, it will be more relevant to consult the range of coloured tracers for water. For other specific uses, especially food-related applications or hydrocarbons, Fluotechnik also offers dedicated categories to direct each need to the right solution.

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