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Comparable measurement of VOC-emissions from building materials followed by a standardized classification system

: Keller, Markus; Gommel, Udo

Journal of the Japan Air Cleaning Association 49 (2012), Nr.5, S.44-53
ISSN: 0023-5032
Fraunhofer IPA ()
Cleanroom; Ausgasung; VOC Emission; Reinraum; Messen; Werkstoff; Klassifikation

The outgassing behavior of materials used in cleanroom environments gains increasing importance in different industries. Especially in newly planned or built semiconductor, photovoltaic and aerospace cleanroom settings, a maximum allowed level of volatile organic contamination (VOC) according to ISO 14644-8 is already often defined in the planning phase. A newly standardized method for the determination and classification of building materials regarding their VOC outgassing properties is described in this article. Chamber measurements of different screened materials are performed using a micro-chamber and collection of the emitted VOC on Tenax sorbent tubes followed by thermo desorption gas-chromatography coupled with mass spectroscopy analysis (TD-GC/MS). The calculated surface specific emission rate (SER) is then converted into a newly introduced easy comparable material classification number AMCm (or) = x. The described method is published in the new guideline draft VDI 2083 part 17 (2011). A public available database for material selection and comparison gives all engineers involved in cleanroom planning and operation a useful tool to estimate the expected ISO-AMC level of total volatile organic compounds (TVOC) based on the selection of included materials.