Topas GmbH
Gasanstaltstraße 47
D-01237 Dresden

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

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The more than 20-years of experience and valuable ideas in the fields of product and test system development are reflected in more than 30 own patents and registered designs.

Current Developments

  • Very wide working range with exact reproducible adjustable particle production rate
  • Accurate setting of minimum aerosol volume flows
  • Digital display
  • Interface for external control
  • Internal brushless compressor
  • Mains connection with integrated wide-voltage power supply
  • Optional operation in battery mode

  • Very high particle production rate (up to 1,5*10 11 per minute)
  • High long-term stability of aerosol generation (VDI guideline 3491, part 2)
  • Monodisperse particle size distribution with a low number of agglomerates
  • Excellent scalability of particle production rate
  • Leak test up to filter class U16 (filter format 610mm x 610mm, volume flow 600 m³ / h) within reasonable time



  • Fast and constant saturation of the air with IPA
  • Integrated suction and flushing of the chamber
  • Minimal use of IPA (250ml per filter)
  • Certification of security level by accredited certification bodies

  • Free configuration of target filter efficiency
  • Customized filter adapter for different small HEPA filter elements, easy to change (5 min)
  • Compact test system design
  • High degree of automation for minimum operator interactions
  • Designed for 24/7 production operation
  • Fast cycle time (30 s) for short test time per filter

  • Time-saving and reproducible determination of oil content in blow-by gases in a wide concentration range
  • Integration into engine test stands
  • Measurement in the full flow of the blow-by (up to 300 l/min; possible bypass flow measurements at large blow-by volume flow rates)
  • Compensation of the differential pressure of the devices (filter measurement)
  • Heated measuring chamber of the GMS 141 and the PAP 610 to avoid condensation

  • Dilution ratio is automatically adjusted
  • Mobile use by battery operation
  • Directing the entire intake volume flow of the particle counter from the sampling point via the dilution system (closed system)
  • Constant, reproducible dilution even under changing operating conditions
  • Internal monitoring of the dilution ratio with display
  • Mobile use (no compressed air supply is required, battery operation possible)
  • High durability and reliability, minimum maintenance
  • Over- and under-pressure operation is permitted
  • Adaptation to customer-specific requirements (dilution ratios) possible

For higher dilution ratios the diluters of series DIL can be cascaded easily, or alternatively the High Dilution System HDS 561 can be used.


  • Modernization of test rigs
  • Development of components
  • Customized solutions
  • Implementation and co-operation on research projects

  • Adjustable within a wide aerosol concentration range (DEHS)
  • Carrier air flow up to 100 Nl/min
  • Compact housing for mobile use
  • Battery operation possible
  • Possibility to connect up to three devices to be calibrated

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Coming events

21. - 23.3.2020
13th World Filtration Congress

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