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Precision Cleaning

The particulate and chemical purity of each production batch of our best-selling HiTech cleaning wipers is randomly checked in our quality laboratory. The user thus benefits from our process reliability. Upon request, our QA inspector will issue a "Certificate of Compliance" with the corresponding test data for an additional charge.

Quality control charts of the production batches HiTech cleaning wiper type SONIT™ MDM



Since 2006, our company has been certified according to DIN EN ISO 9001:2015 for the areas of development, production and distribution of consumables for clean technology.

Clear & Clean products are manufactured in Germany. The company's headquarters is the Ostsee-Werk Lübeck.

Main characteristic quality:

We promote a living culture of maintaining and improving the delivery quality of our products. This includes the following steps:


  • Performing incoming and final material inspections.


  • Continuous monitoring of critical production conditions such as particulate air purity and humidity in the production clean room.

  • Involving and motivating all employees in continuous improvement through the visualization of productivity and quality data and through a reward system for complaint-free seasons.


  • Continuous investment in the renewal of measuring and testing technology in order to remain at the cutting edge of technology and to record error probabilities far before failure occurs.


  • The operation of an extensively equipped research laboratory for the qualification of new materials, the development of new test methods and to support our customers with questions regarding wiping cleaning procedures.

Quality control test methods

Particle Release (IEST-RP-CC004.4)

In a standardized procedure, the particulate washout level of textile materials is determined before and after aquatic decontamination using a liquid particle counter. For our HiTech cleaning wipers, limit values apply. If these are exceeded, the production batch in question is first withdrawn. It is then subjected to renewed decontamination, tested again and only then released for sale.


Particle Release (Immersion method)

Since the first hour of clean technology, particles have been microscopically visualized, counted and analyzed. Although various devices for automatic particle counting are available in our research laboratory, the residual particles from the test specimens are evaluated visually. This is the only way to incorporate decades of experience into the evaluation. With the aid of the automated light microscope shown, it is possible to work in the following contrast variants: Incident light, transmitted light, oblique light, polarization and fluorescence.  


Wettability (Drop-Sinking-Time)

Some wiping products used in clean technology consist of polymers that have low water wettability without special treatment. They are hydrophobic and must be made water-absorbent by finishing with a surfactant. To control the hydrophilization processes of textile materials, the time required for a drop of water to sink into the material is determined by measurement.


Electrical Purity Test 

The electrical discharge behavior of textile wiping products in clean technology is an indicator parameter for the material purity of textile materials after the decontamination process of polymeric wiping products when the material moisture content is known. Win Labuda has applied for a patent for the test method. 



Prüfling in 600 ml Prüf-Flüssigkeit geben 
(Reinstwasser, Tensid oder Lösungsmittel)


Prüfling in der Prüf-Flüssigkeit für 5 min bei 125 rpm schütteln 


Größenverteilung und Anzahl der Partikel mittels Flüssigkeits-Partikelzählers messen


Partikel-Anzahl pro m² (kumulative Größen-Verteilung)


Prüfling drei Mal in
1000 ml Reinstwasser eintauchen und abtropfen lassen


Aliquot (250 ml) des Prüf-Wassers über eine Membran filtrieren


Partikel-Anzahl an fünf Positionen Licht-mikroskopisch auszählen


Partikel-Anzahl pro m² (> 0,2 µm, in Summe)


Prüfling in der Kontur-Ansicht visualisieren


Zehn einzelne Wasser-Tropfen auf die textile Oberfläche applizieren


Einsink-Prozess mittels Hochgeschwindigkeits-Kamera verfolgen


Tropfen-Einsinkzeit in Millisekunden


Konditionierten Prüfling mittels Wechselspannung vollständig entladen


Prüfling auf Nominal-Spannung aufladen


Entladungs-Zeitwert für die Dauer von 60 Sekunden aufnehmen


Entladungs-Zeitwert nach 60 Sek. in Prozent