DELTA TEST – We do eddy current.

DELTA TEST – a name that stands for qualified, non-destructive material testing using the eddy current procedure.

Since its foundation in 1988, DELTA TEST has been carrying out state-of-the-art eddy current test services, according to customer requirements and based on respective norms and standards. We are specialised in all kinds of eddy current tests and provide these around the world. Tests of paramagnetic and ferromagnetic heat exchangers play a significant part in this.

DELTA TEST guarantees short response times from the initial enquiry through to job execution, and furthermore optimally short test times with at the same time high quality test results. Our aim is to provide information through high-quality and reliable test results, which will help you to lower your costs for maintenance and repair in the long-term.

With this reliability and our availability around the clock, we can achieve a relationship of complete trust with our customers. Our national and international success is based on highly motivated, certified and qualified employees and modern equipment, development achievement and the ability to implement innovative ideas for you and with you.

DELTA TEST provides you with the security you require – fast, straightforward und successful!


Eckard Köllner - General Manager

Eckard Köllner
General Manager

Daniela Sprakties - General Manager

Daniela Sprakties
General Manager

Joachim Uebrig - Proxy + Head of Service

Joachim Uebrig
Proxy + Operations Manager

Annett B. Hecht - Proxy + QM

Annett B. Hecht
Proxy + QM

Thorsten Arndt
Laboratory Manager

Lars Regehr
Head of Service


  • Chemical and petrochemical plants
  • Refineries
  • Nuclear power plants
  • Conventional power plants
  • Waste incinerators
  • Sugar factories
  • Sea water desalination plants
  • Oil rigs
  • Rail cars/train
  • Aircraft industry
  • Automotive industry
  • Pressure tank industry
  • Tube manufacturers


  • Ferromagnetic tubes
  • Condenser tubes
  • Air-fin cooler tubes
  • High-pressure tubes
  • U-bended tubes
  • Tube-sheet expansion zones
  • Boiler and furnace tubes


  • Heat exchanger inspections
  • Mechanized eddy current inspections with crawlers and scanners
  • IRIS inspections
  • Videoscope inspections
  • Tube leak testing
  • Sleeve shaft tests
  • Weldolet and hot surface inspections
  • Flange sealing surface inspections
  • Eddy current inspections of RDB threads and bolts
  • Eddy current inspections in confined spaces via 3-axis manipulator Boiler and furnace tube inspections
  • Surface crack inspections
  • Turbine blade inspections
  • Rolling bearing inspections
  • Brake disc inspections
  • Rail inspection
  • Eddy current array technique