Topas GmbH
Gasanstaltstraße 47
D-01237 Dresden

Tel:     +49 (351) 2166 430
Fax:    +49 (351) 2166 4355

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Validation of Operating Theatres

Protection Factor Measurement of Operating Rooms

The new guideline DIN 1946-4:2008 Room Air Technology – Part 4: ‘Room air conditioning equipment in buildings and rooms of public health sector’ describes a test procedure on determination of a protection factor in operating theatres considering the following:

  • inclusion of German standard VDI 2167, guideline SWKI 99-3 of Swiss assoziation of building services engineering engineers
  • simulation of inner and outer contaminations
  • simulation of flow bodies (OP-table, OP-lamp, dummies) and heat sources

Following equipment is required for performing according testing:

The advantage of the Aerosol Distribution and Dilution System ADD 536 is its ability to have a combined aerosol distribution and dilution. For performing these validation tests only an aerosol generator and a particle counter is needed additionally.
By means of the control and data acquisition software OPQWin it is possible to create detailed test protocols.

Aerosol distribution and dilution system ADD 536 for protection grade measurement of operating rooms acc. to DIN 1946-4 and SWKI 99-3 (photo: Topas GmbH) Protection grade measurement of operating rooms / theatres acc. to DIN 1946-3 and SWKI 99-3 with aerosol generator, aerosol dilution system, aerosol distributor with 6 outlets and particle counter (photo: Topas GmbH)
Equipment for protection grade measurements acc. to DIN 1946-4 and SWKI 99-3 Setup for protection grade measurements in OP-rooms


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