Airtightness measurements in laboratory areas to the securing of small loads of particulate matter

Manufacturing and development processes in the electrical industry (microchips), the technology for smallest elements with high precision, the medical research and the food technology as well as operating theatres require laboratories and/or areas with particularly unsoiled air. The clean-room technology dedicates itself to the protection of these work areas. A field of application is the avoidance of undesirable high concentrations of suspended matters and fine types of dust in air, which can lead to disturbances in the operating procedure and to falsified test results. For this reason it is necessary to limit the particle load of the room air. In the following two measuring examples one describes, which experiences were made with airtightness measurements in pure areas and why defined airtightness requirements to the space covering and their early examination with the BlowerDoormeasuring system is a relevant test criterium to the securing of small dust loads.