Helmut Klumpf Technische Chemie KG

Industriestr. 15, 45699 Herten
Telephone +49 2366 1003-0
Fax +49 2366 1003-11


Hall map

GIFA 2015 hall map (Hall 11): stand H16

Fairground map

GIFA 2015 fairground map: Hall 11

Our range of products

Product categories

  • 19  Measurement and test technology
  • 19.03  Testing of materials and workpieces
  • 19.03.04  Crack detection equipment, test media

Our products

Product category: Crack detection equipment, test media

Dye Penetrant System

DIFFU-THERM ® penetrant testing

Scope and purpose

Penetrant is used to display errors, such as Cracks, overlaps, wrinkles, pores and fusion, which are open to the surface. It is mainly used in metal workpieces, but can also be used for other materials, provided that such materials are not affected by the test equipment and / or non-porous.

Just ask the surface cracks in highly stressed workpieces are the most dangerous mistakes, because they can result due to the notch effect to an early break.

For the identification of such surface cracks is recommended especially destructive testing after DIFFU-THERM ® penetrant testing .

The implementation of the method is described in DIN EN ISO 3452-1 [571-1] and DIN 54 152 Part 1 defines and describes.

Go directly to System red / white – System C – UV System

Please take also a look at our page Enviroment.

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Product category: Crack detection equipment, test media

Magnetic-Particle Testing System

DIFFU-THERM ® – Magnetic particle inspection

In general magnetic particle inspection by DIFFU-THERM ® is also an extremely sensitive method of non-destructive testing, but its use is restricted to ferro-magnetic materials.

The magnetic flux leakage method used to demonstrate microscopic defects on the surface and in the interior of ferromagnetic workpieces.

Concerning the content of corrosive constituents, the systems fulfils all requirements of ASME Code, Section V, Article 6, T – 641, Edition 2001. Test certificates arc issued on request or displayed at Info.

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Product category: Crack detection equipment, test media

System UV



For the DIFFU-THERM ® system UV all at System red / white described applies.

In the DIFFU-THERM ® UV system an assessment of defective workpieces is only possible with UV light. The system is characterized by emulsifying and washing with water.

The test equipment are type tested and approved according to DIN 54 152.

Regards the level of corrosive ingredients, the products meet the requirements of ASME Code, Section V, Article 6 Upon request, also inspection certificates according to EN 10 204 – 3.1 B issued.

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About us

Company details

Helmut Klumpf KG, with its headquarter in Herten, represents for more than 50 years the crack detection product


Our products are in worldwide demand when destructive testing (NDT) for metal and partly non-metallic surfaces are wanted. Two methods of NDT are used here:

dye penetration (Penetrant Testing = PT)
magnetic particle testing (Magnetic Testing = MT).

With these surface cracks are visible in workpieces.The oldest German Red-White penetrant was found by Helmut Klumpf sen., developed in the Junkers aircraft and engine plant in Dessau in 1943 and patented under No. DRP 895 839. For an improved process in 1958 another patent No. 1.207.663 DBP was granted. Another method with much better display was developed by Helmut Klumpf jun., the current owner of the company, and was registered and granted in 1998 as an EU patent No. 0978719. Since 1980, our production was expanded to include the manufacture of magnetic particle inspection equipment.

Of course, all our products match the European EN standards and are checked patterns. The Helmut Klumpf KG is cooperative member of the German Society for Non-Destructive Testing for over 40 years DGZfP and is also a member of the German Welding Society DVS .

Our main concern is to deliver our products with constant high quality to our customers as quick as possible.

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