As part of Particle Measuring Systems Clean Air Services (CAS) for cleanroom certification, our technicians can perform Filter System Integrity Tests (DEHS). Filter integrity testing is a critical operation commonly employed in most cleanrooms including within the Pharma industry and Hospitals. It is designed to confirm structural integrity of a sterilizing filter, ensure that the filter is properly installed and that it complies with all regulatory requirements.
The DEHS (Di-Ethyl-Hexyl-Sebacat) filter system integrity test uses a non-soluble, colorless and odorless liquid that is suitable for producing steady aerosols. DEHS is a proven liquid for filter system integrity testing in challenging clean area applications. DEHS evaporates completely, a droplet with a 0.3 µm diameter has a life of 4 hours. The DEHS challenge test, can be carried out on end filters and on filters installed in air lines or on devices carrying air. A maximum permissible leakage penetration value is obtained based on the filter classes used in accordance with EN 1822-1 (E10 – E12, H13, H14, U15 – 17).
CAS Clean Air Services performs filter integrity tests to verify that filters and filter mounting systems installed in clean rooms are devoid of leaks. Our test confirms that filter systems have been installed correctly and that no leaks have arisen during operation. The CAS team at Particle Measuring Systems are highly experienced and skilled partners for your filter system integrity tests. With 30+ years in the field and countless filter application work orders you can trust us with your most routine or complex filter testing needs.
To test these critical elements, CAS uses our own industry leading Lasair®III optical particle counters, fully calibrated by our in-house SCS 0118 certified lab. Audit ready calibration certificates are provided with your final report.
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When you trust CAS in Switzerland and Austria to handle your DEHS Filter System Integrity Testing, Cleanroom Certification, Thermal Validation and Contamination Control activities we put our 36 years of business and 100+ years of technical experience into practice to benefit your company. Working together as the Particle Measuring Systems and CAS team, our focus is unwaveringly on providing you the highest quality product at the best value. To do this, we constantly challenge ourselves to find innovations through process and technological improvements and we share these state-of-the-art methods with you.
Call us for a quote or a list of references and find out today why >95% of our customers choose CAS time and time again for their routine and uniquely challenging contamination control needs.
The Swiss Accreditation body, SAS, grants PMS/CAS accreditation as a testing laboratory for Cleanroom Certification and Qualification as well as Thermal Process validation and studies in accordance with ISO / IEC 17025:2017. The scope of the STS 0566 accreditation is defined in the official directory of Accredited Testing Centers. Access our PMS/CAS STS 0566 accreditation certificate and others here.