Water leak detection
UV Fluorescent Colored Tracers
UV Fluorescent Clear Tracers
Food Tracers for Water
Non-fluorescent color tracers
Fluorescein: fluorescent tracer for leak detection
Equipment for Tracing and Diagnostics
UV Lamp Kits
Dosing accessories and equipment
Complete Air Conditioning Tracing Kits
Complete Oil and Fuel Tracing Kits
Complete water tracing kits
Smoke generators for pipes, sewer networks and airtightness testing
Inflatable pipe plugs for sewer pipes, leak testing and network interventions
Detection needles
Tracing in Natural Environments
All our measurement equipment for tracing in natural environments
Fluorescent Tracers for Maritime Safety
Powder Tracers
Concentrated Liquid Tracers
Sodium Fluorescein / Uranine
Rhodamine WT 20%
Eosin
Sulforhodamine B
Potassium iodide
Amino G Acid: fluorescent tracer for studies in natural environments
Sodium naphthionate
Fluorimeters for measuring fluorescent tracers in natural environments
Data loggers: monitor and use your measurements in natural environments
Tracing in Industrial Environments
Oil and Fuel Tracers
Colorants and Markers
Fluorescent UV Markers
Powder Contrast for Industrial Filtration
Tracers for Air Conditioning and Refrigeration Systems
Water & sanitation: tracing solutions for networks and technical installations
Contamination Simulation
Tracers for Dry Contamination Simulations
Tracers for Wet Contamination Simulations
Contamination Simulation Kit
During a tracing test, visual observation is not always sufficient to detect tracer recovery or monitor how a tracer signal changes in water. A fluorimeter measures the intensity of the fluorescent signal and can identify concentrations that are difficult to distinguish with the naked eye. Used in the field or as part of a monitoring protocol, it can help confirm a hydraulic connection, measure transit time, compare several observation points or analyse a tracer breakthrough curve. Fluotechnik offers fluorimeters for consulting firms, hydrogeologists, laboratories, local authorities and researchers working on aquifers, rivers, springs, karst networks and catchment areas.
Detect the presence of a tracer in water, even when its signal is difficult to observe directly.
Monitor the appearance, intensity and development of the signal at one or more control points.
Carry out measurements in aquifers, rivers, springs, resurgences, karst networks and other natural systems.
Select the equipment according to the tracer used, expected concentrations and monitoring duration.
Fluotechnik helps you choose a fluorimeter suited to your tracing substance, study area and measurement objectives.
A fluorimeter measures the light emitted by a fluorescent substance when it is excited by a suitable light source. During a tracing test, it can detect the tracer signal after injection and monitor its passage through the different control points.
The measurements obtained can help to:
A fluorimeter therefore provides more precise information than visual observation alone. It converts the fluorescent signal into data that can be compared and interpreted as part of the study protocol. The tracer and the instrument perform two distinct functions.
Sodium fluorescein, eosin, Rhodamine WT, Sulforhodamine B, Amino G Acid and sodium naphthionate are substances introduced into the environment. The fluorimeter detects and measures the signals they produce. However, not every instrument is suitable for every tracer. The wavelengths, measurement ranges and sensitivity of the fluorimeter must be compatible with the selected substance.
Fluotechnik offers fluorimeters designed to detect and measure fluorescent tracers in water. These instruments can be used to monitor tracer recovery, compare several measurement points and observe how the signal develops during a hydrological or hydrogeological test. The choice depends on the tracer used, the expected concentration range, the required sensitivity, environmental conditions and measurement frequency.
Depending on the model, fluorimeters can meet different requirements:
The quality of the results depends as much on the protocol as on the instrument itself. The tracer, control points, measurement frequency and environmental conditions must be defined before injection.
Begin by identifying the question that the measurements should answer:
The fluorimeter must be suitable for the signal produced by the substance. In particular, consider:
In a multi-tracer protocol, the equipment must be able to distinguish clearly between the different signals being monitored.
Before introducing the tracer, reference measurements should be taken at the different control points. This step identifies the fluorescence naturally present in the environment and provides a baseline against which post-injection measurements can be interpreted.
Depending on the instrument and protocol, calibration may be required to relate the signal intensity to a known concentration. Instrument settings, checks and reference solutions should be prepared under conditions consistent with those of the study.
Measurements may be taken at a resurgence, watercourse, borehole, piezometer, outlet or any other potential tracer recovery point. The frequency should reflect the estimated transit time. Measurements taken too far apart may miss the passage of the tracer, particularly when recovery occurs over a short period.
After injection, the fluorimeter can be used to observe:
These data may be recorded through spot measurements or collected as part of a more regular monitoring programme.
The values obtained must be analysed while considering:
The fluorimeter provides the measurements, but their interpretation remains linked to the behaviour of the hydrological system being studied.
Selecting a fluorimeter is not simply a matter of choosing the most sensitive instrument. The equipment must be compatible with the tracer, concentration range, field conditions and the way in which the results will be collected and analysed. Fluotechnik supports professionals in preparing measurement systems suited to hydrological and hydrogeological tracing tests.
Fluorimeters detect and measure the signals produced by substances used during tracing tests.
They can reveal a weak signal, monitor how it changes and make comparisons between several points easier.
These instruments support studies of hydraulic connections, tracer recovery, transit time and water circulation.
Depending on the model and protocol, a fluorimeter can be used for spot checks, measurement campaigns or longer-term monitoring.
Fluotechnik also offers fluorescent substances, data loggers and other equipment required to prepare a complete protocol.
Our team helps you compare instruments according to the tracer, required sensitivity, field conditions and planned monitoring method.
Discover how a fluorimeter can be used to prepare, carry out and monitor a water tracing test.
These videos provide a clearer understanding of:
Discover our Hydrology & Fluorescent Tracing catalogue: a complete selection of professional solutions dedicated to tracing water flows, studying underground networks and detecting hydraulic transfers. Fluorescent dyes, fluorimeters, detection equipment and technical accessories...
A fluorimeter is an instrument that measures the intensity of fluorescence emitted by a substance. In hydrology, it is used to detect and monitor a fluorescent tracer present in water.
It can detect the arrival of a tracer, monitor its recovery, compare several points, determine transit time and analyse how the signal changes over time.
Depending on the model, a fluorimeter may measure tracers such as sodium fluorescein, Rhodamine WT, eosin, Sulforhodamine B, Amino G Acid or sodium naphthionate. Compatibility between the instrument and the tracer wavelengths must always be checked.
Some instruments have several channels or configurations for monitoring different substances. This capability depends on the model, the fluorescent signatures and the protocol used.
The fluorimeter measures the fluorescent signal. The data logger stores and organises the values collected over time. The two instruments can work together, but they do not perform the same function.
Yes. Measuring the background signal before injection is important. It identifies the signal naturally present in the water and makes it easier to distinguish tracer recovery.
It can estimate or measure a concentration when the instrument has been correctly calibrated and the protocol accounts for environmental conditions. Raw signal intensity should not be interpreted as a concentration without suitable calibration.
Yes. Some models are designed for on-site measurements. The choice depends on autonomy, durability, installation method, environmental conditions and the required type of monitoring.
Natural fluorescence, turbidity, suspended matter, ambient light, temperature, pH and the presence of other substances can all affect the signal. These factors should be considered when preparing and interpreting the test.
Yes, depending on the model and associated equipment. For measurements recorded over a prolonged period, the fluorimeter can be connected to a data acquisition system or data logger.
The choice mainly depends on:
A fluorimeter plays a central role when the objective is to detect and measure the recovery of a fluorescent tracer. It can monitor the signal over time, compare several points and provide more precise data than visual observation alone.
The choice of instrument mainly depends on:
For a short measurement campaign, an instrument intended for manual readings may be sufficient. Longer-term monitoring requires greater autonomy and may justify the addition of a data logging system. The choice must also take account of potential interference within the environment.Water with natural fluorescence, suspended matter or several fluorescent substances may require a more advanced protocol. Fluotechnik supports you in selecting the fluorimeter, tracers and complementary equipment required to build a consistent measurement system.
A usable tracing test combines a suitable tracer, a compatible instrument and a consistent monitoring method. Discover Fluotechnik substances and equipment for preparing measurements, detecting tracer recovery and storing the data collected in the field.