Comtest subsidiary DMAS received an official third party test report for the determination of the cleanroom suitability of their RF absorbers. Both the hybrid (HT) and microwave (MT) absorbers are tested by Fraunhofer institute in Germany. The aborbers are tested in accordance with ISO 14644-1. The conclusion of this report is that the hybrid absorbers are suitable for useage in cleanrooms fulfilling the specifications of ISO class 4. The MT absorbers are suitable for use in cleanrooms fulfilling the specifications of ISO class 2.
In comparison with the US federal standard 209E the hybrid absorbers comply with class 10. The MT absorbers comply with class 1.