Air filter medium, "Correlative Particle Analyzer," and a device for measuring biological air contamination impress the jury

Interdisciplinary diversity shines at the Fraunhofer Cleanliness Technology Award "CLEAN! 2013"

On the 2nd day of the Cleanroom Lounge, the moment had arrived: the three winners were awarded for their contributions with the Fraunhofer Cleanliness Technology Award »CLEAN! 2013«. The 1st prize went to »MEGAcel with NELIOR Filtration Technology« by AAF-Lufttechnik GmbH. Its air filter medium base…

Figure 1: Representation of the need for research on critical contamination parameters in the manufacturing industries operating under cleanroom conditions [2].

Image 2: Overview of markets that rely on purity in production [3].

Image 3: Overview of critical contaminations on product surfaces.

Figure 4: REM image of a surface with a mixed contamination (film and particulate).

Figure 5: Procedure for validating the purity status of products.

Figure 6: Overview of possible analysis methods.

Figure 7: Critical particle sizes for functional components and systems [6].

Image 8: Damaged connecting rod (left) and cylinder (right). The cause of failure was a continuous injection caused by a particle in the size range of a few micrometers.

Image 9: Cleanliness analysis according to VDA 19: Overview of the procedures [7].

Image 10: Cleanliness values of a decay measurement.

Image 11: SEM image of contamination on a filter membrane.

Figure 12: Quantitative results of the cleanliness analysis of a medical device.

Figure 13: Procedure for cleaning validation.

Figure 14: Setting a threshold value for the microscopic analysis of an automated particle count.

Image 15: CO2 snow cleaning (left), integrated into a cleanroom at ESTEC, Noordwijk (right).

Figure 16: Cleaning efficiency of the CO₂ snow jet cleaning process for particles on a selected surface

20.12.2012
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R+D & Community of Interest

Purity validation of contamination-critical products

In a variety of innovative products, contamination control plays a crucial role. Despite the use of state-of-the-art cleanroom technology, critical contaminations in mass production cannot be completely ruled out. Therefore, the purity of contamination-critical products must be continuously monitore…

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