The most effective surface cleanliness measurement

From handheld devices to fully automated systems in Industry 4.0

Instantly check

product surface quality

Enhance effectivity

of your production

Save expenses

in your processes

Make work easier

for your employees

Recognoil® products allow you to visualize, measure, and document what is not visible to the naked eye.

Within seconds, contactless and without any need to prepare the surface of the part, visualize and quantify the presence of surface contaminants.

Thanks to this, you have the opportunity to really assess the suitability of the surface for other technological operations.

Find out if the object is really clean

verify the cleanliness of parts for surface treatment
assess the surface state suitability for gluing
control oil application when forming
perform oil preservation of the parts uniformly

We already help more than 70 companies in the world to increase efficiency and quality of production and durability of products.



determines the suitability of the surface for your technology


Products for large-area surface scanning

Recognoil® 2W

Recognoil ®2W is a handheld wireless analyzer - oil and grease fluorescence detector for mobile use. Together with a tabletPC and Recognoil ® PRO software, it forms a very efficient and productive system for fast random and systematic testing for the presence of residual greasy contamination in large and small plants. The measurement does not require any special surface preparation and the interpretation of the results is easy even for less qualified workers thanks to the OK / NOK operator mode.

The instrument is applied directly onto the analyzed surface.


handheld, mobile device, suitable for large objects, weldments, assemblies


ideal for less complex (rather flat) surfaces


analyzed area 19 x 13 mm

More information

Documents for download  ▼  

Recognoil® QB

Recognoil ® QB is a desktop analyzer - oil and grease fluorescence detector suitable for laboratory use. It is designed for measuring a larger area in one sequence, easily handles intricately shaped parts, automatically searches for miniature objects and evaluates them separately. The evaluated area is 20 times larger than with the Recognoil®2W device and the whole process of scanning parts is completely contactless. The device connects to your corporate network via an Ethernet connection, or completely separately to a computer in your lab.

The samples are placed through the front door on a table with adjustable height.


modular equipment, suitable for smaller objects in larger numbers


great for more complex, articulated and non-standard surface shapes


analyzed area 80 x 60 mm

More information

Documents for download  ▼  

Comparison of Recognoil ® 2W and QB outputs

The checked specimen:

Recognoil® 2W surface area 13 x 19 mm

Recognoil® QB surface area 60 x 80 mm

Recognoil ® products are primarily intended for checking the condition of the surface of metal objects.

Thanks to surface "large-area" scanning of the controlled area and visualization of fluorescence intensity values in the color spectrum of the fluorescence map, even small impurities can be immediately located and thus verify the suitability of the surface for further operations.

The lower the measured value of the fluorescence intensity, the cleaner the surface.

Recognoil® PRO SW

All Recognoil® devices come with advanced PRO software, which not only is used to display scanned and evaluated areas, but also allows further data processing and includes a number of unique functions.

For example, Recognoil® PRO software allows automatic conversion of the fluorescence value to layer thicknesses [nm], resp. area concentration [mg.m-2] using a physical-mathematical model of oil made by laboratory sampling calibration.

We also offer customization of the supplied software according to customer requirements (data export to the database, automatic setting of limits for a given part, import of a measurement guide according to a QR code, operator modes, company protocols, etc.).

With Recognoil®, you can verify that your processes are actually working and that the surface of the parts meets the requirements for further processing. By introducing a control mechanism into production, you will prevent the occurrence of immediate and hidden defects of parts and increase the economy of production. Thanks to the visualization of the distribution and intensity of pollution, the assessment of the surface condition is simple and clear.

Functions included in Recognoil® SW PRO:

  • display image data and measurement results
  • selection of areas of measured areas
  • naming the measurement (sample)
  • sorting and searching files
  • export files (pdf, jpg, txt)
  • creation of protocols (photo documentation of parts, image and text notes)
  • setting metering parameters (exposure type, image quality, etc.)
  • conversion of fluorescence units to oil thickness or area concentration
  • creating statistics
  • limit settings
  • inserting object masks
  • view 3D results
  • calculation of above-limit pollution
  • calculation of frequency and size of point pollution
  • possibility of additional implementation of functions according to individual customer requirements*

*additional service

Recognoil® technology compared

  suited         impractical         not suited

Benefits of the Recognoil® products

  • evaluates a large area in one measurement
  • quickly reveals critical parts of the part
  • quick response to part condition change
  • operator mode OK - NOK
  • the measurement requires no preparation
  • finds even the smallest impurities
  • advanced SW with a wide range of functions included in the accessories
  • quantitative and qualitative analysis

For technologists or quality professionals, Recognoil® becomes a tool that allows it to immediately start optimizing production processes

  • affordable professional solution
  • SW included in the price of the system
  • easy method, easy training
  • contributes to good customer relations
  • reduces scrap production
  • prevents complaints
  • contributes to the economy of production
  • allows to reduce the environmental burden of operations

For a manager or executive, purchasing Recognoil® means a quick return on investment

Price list  ▼

Please contact us to obtain a price offer !

Where and for what purposes are Recognoil® products used?

Can Recognoil ® be applied to your desired application?

We will be glad to help you find out.

As the range of applications for Recognoil ® products is relatively wide, we meet the diverse requirements of our customers. Often the individual applications vary very widely and it is necessary to consult the suitability of individual products.

In addition, we are often able to offer individual tailor-made solutions, eg for detecting the inner surfaces of pipes and other hard-to-reach areas.

We will be glad to consult your request thoroughly with you first and test the suitability of our products on your parts.



Contact us

In our contact form, please fill in your desired application in as much detail as possible and describe exactly your question.

Save costs

Send your samples

If possible, prepare your samples for shipment to our laboratory. We will perform a free suitability test of the required application.

Save costs

We make tests

We will prepare a free protocol on the suitability of the application you require for working with Recognoil ® devices and we will recommend a suitable solution.

Save costs

We make an offer

We will prepare a complete price offer for a suitable Recognoil ® product and the necessary accessories.


For more frequently asked questions, please refer to this page.



For those who have
customers and quality
in the first place!


For frequently asked questions, technical information, and practical examples of Recognoil® products, please visit this page.


Recognoil® products are designed and manufactured by TechTest s.r.o. in the Czech Republic. Founded in 2011, the company is an established company in the field of industrial detection of oil and grease substances using optoelectronic devices using the UV method. The devices developed by us are used worldwide across various fields and applications. The main products include Recognoil® 2W mobile devices, Recognoil QB® laboratory devices and specialized systems for automation of production processes.

The company's know-how is based on more than 20 years of experience in the field of surface treatment, surface pretreatment, engineering, and electronic device design. TechTest s.r.o. successfully connects industrial practice with the academic environment and solves projects in the field of R&D (Research and development of equipment for efficient search and securing of dactyloscopic traces, Advanced mechatronic pressing system with controlled lubrication).

For efficient and sustainable industrial production in the 21st century, we bring a unique solution within industry 4.0, thanks to which it is possible to effectively ensure not only cleanliness control systems, but above all increase productivity and economy of all production technologies where emphasis is placed on surface quality.

Specifically, it focuses on cleaning processes (C&C - Clean and Control) and lubrication processes (L&C - Lubrication and Control). All this with an emphasis on reducing the environmental burden and the economic perspective.

When developing our products, we follow the motto:

"Fast, reliable and objective surface inspection is the basis of quality and efficient production."


Contact us

If you have a second, please fill in our detailed contact form.


   Street: Jungmannova 917
   ZIP: 28504
   City: Uhlirske Janovice
   Country: The Czech Republic

   +420 605 305 171

   info (AT)

Invoice address  ▼

Invoice address:

Semonice 110, 551 01 Jaromer, Czech Republic

ID: 28824440, VAT-ID: CZ28824440

Delivery time is typically 6 weeks. Please contact us for current information.

Wire transfer with 30 days due or in advance (according to the order confirmation).

Save costsAlternative payment method : Credit Card VISA / MasterCard..

TechTest, s.r.o. is devoted to properly protect your personal data. Therefore, we strictly adhere to legal requirements when collecting and processing personal data. This specifically includes the EU’s General Data Protection Regulation (GDPR), as well as the telecommunications law. The privacy policy statement of TechTest, s.r.o. can be downloaded here.