
Development and manufacture of aerosol generators, filter test rigs and particle measuring instruments for industry and research.

Topas GmbH (Topas Inc., USA)
Dresden (DE, Topas GmbH) · Vadnais Heights, MN (USA, Topas Inc.)New on Amplifa
About Topas
Topas is a specialist in particle and aerosol technology founded in 1991 and based in Dresden, Germany. The company develops, manufactures and distributes devices and complete test systems for generating, conditioning and measuring aerosols as well as for classifying and testing filters and filter media. The portfolio includes aerosol generators (liquid and powder dispersion), conditioning devices such as thermodenuders and diffusion dryers, dilution systems, laser aerosol spectrometers and aerosol photometers, as well as filter test rigs for automotive, industrial and cleanroom filters. Fields of application include, among others, filter testing to ISO, EN and DIN standards, cleanroom validation to ISO 14644, calibration of measuring instruments, medical and toxicological research, and surface and material characterisation. For the American market, Topas Inc. in Vadnais Heights, Minnesota, operates as a sales and service location; it offers application consulting, installation, on-site calibration, maintenance and training. The company is ISO 9001 certified and supplies customers in over 30 countries.
- Site
- Vadnais Heights, MN, USA
- Processes
- Validation and acceptance of cleanrooms, Testing of safety cabinets, Testing hospital operating theatres, Testing air intake filters, Testing blow-by separators, Testing cabin air filters, Testing exhaust gas filters (GPF), Testing HEPA and ULPA filters
- Materials
- KCl (potassium chloride, aerosol), Isopropanol (vapour for filter conditioning), Suspensions/cell lysates (incl. microorganisms/viruses), Potassium chloride aerosol, Isopropanol (vapour), Suspensions/cell lysates
- Certificates
- ISO 9001
- Founded
- 1991
- Industries
- Filter and filtration industry, Automotive, Cleanroom technology, Medical technology, Semiconductor/microelectronics, Air quality/environmental monitoring
- 01
Development and engineering
- 02
Manufacturing in Germany
- 03
Worldwide sales
- 04
Application consulting
- 05
Installation
- 06
Calibration and validation
- 07
Repair, maintenance and training
Aerosol and test substances
Potassium chloride aerosol
Standard test aerosol, among other uses for filter tests to ISO 16890 with the atomizer generator ATM 240/S.
Isopropanol (vapour)
Used for conditioning and clogging of air filters according to ISO 16890-4 in the conditioning cabinet TDC 584.
Suspensions/cell lysates
Starting materials including microorganisms and viruses for defined aerosols in medical and toxicological studies.
Locations

Vadnais Heights, MN (Topas Inc.)
USSales and service location for the American market
- Atomizer Aerosol Generator ATM 240/S
- Solid Aerosol Generator SAG 410/P
- Conditioning cabinet TDC 584
- Ultrasonic Disintegrator UDS 751
- Laser Aerosol Spectrometer LAP series
- Aerosol photometer PAP series
- Filter test rigs AFC, AFS and further series
Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Validation and acceptance of cleanroomsTesting | – | – | – | – | – |
| Testing of safety cabinetsTesting | – | – | – | – | – |
| Testing hospital operating theatresTesting | – | – | – | – | – |
| Testing air intake filtersTesting | – | – | – | – | – |
| Testing blow-by separatorsTesting | – | – | – | – | – |
| Testing cabin air filtersTesting | – | – | – | – | – |
| Testing exhaust gas filters (GPF)Testing | – | – | – | – | – |
| Testing HEPA and ULPA filtersTesting | – | – | – | – | – |
| Testing general indoor air filtersTesting | – | – | – | – | – |
| Testing gas turbine filtersTesting | – | – | – | – | – |
| Testing medical filtersTesting | – | – | – | – | – |
| Pore size analysis (filter media)Testing | – | – | – | – | – |
| Efficiency measurement (filter media)Testing | – | – | – | – | – |
| Testing of cleanable filter mediaTesting | – | – | – | – | – |
| Testing mask mediaTesting | – | – | – | – | – |
| Instrument calibration (aerosol/particle measuring instruments)Testing | – | – | – | – | – |
| Generation of defined aerosols (powder, liquid, solution, suspension) for medical/toxicology studiesTesting | – | – | – | – | Powder, Liquid, Solution, Suspension |
| Coating surfaces with aerosols (produce, monitor, modify)Surface | – | – | – | – | – |
| Substance characterisation (deagglomeration behaviour, particle size distribution, particleTesting | – | – | – | – | – |
| Testing of devices, components and sensors (hoover testing, solar cell dusting)Testing | – | – | – | – | – |
| Visualisation of air flows / visual leak testing (fog generation)Testing | – | – | – | – | – |
| Integrity testing of HEPA and ULPA filters (droplet aerosol)Testing | – | – | – | – | – |
| Filter leakage testing with dilution systemTesting | – | – | – | – | – |
| Dust loading / conditioning of air filters by isopropanol vaporTesting | – | – | – | – | Isopropanol (vapour) |
| Repair, maintenance, calibration and validation of test systems (on-site)Testing | – | – | – | – | – |
22 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Atomizer Aerosol Generator | Topas ATM 240/S | – | – | – | Vadnais Heights, MN (USA) |
| Solid Aerosol Generator | Topas SAG 410/P | – | – | – | Vadnais Heights, MN (USA) |
| Conditioning cabinet | Topas TDC 584 | – | – | – | Vadnais Heights, MN (USA) |
| Ultrasonic Disintegrator | Topas UDS 751 | – | – | – | Vadnais Heights, MN (USA) |
| Electromagnetic sieve vibrator | Topas EMS 755 | – | – | – | Vadnais Heights, MN (USA) |
| Diffusion dryer | Topas DDU 570 | – | – | – | Vadnais Heights, MN (USA) |
| Thermodenuder (VOC removal) | Topas TDD 590 | – | – | – | Vadnais Heights, MN (USA) |
| Dilution system | Topas DIL 540/B, DIL 541/B, DIL 545/B, DIL 546/B | – | – | – | Vadnais Heights, MN (USA) |
| Aerosol photometer | Topas PAP series | – | – | – | Vadnais Heights, MN (USA) |
| Laser Aerosol Spectrometer | Topas LAP series / LAP 324 | – | 0.15 μm – 40 μm, ≤ 10 000 particles/cm³ | – | Vadnais Heights, MN (USA) |
| Condensation Fog Generator | Topas CFG 291 | – | – | – | Vadnais Heights, MN (USA) |
| Dilution System (static 1:100) | Topas DIL 544 | – | 1 cfm = 28.3 L/min | – | Vadnais Heights, MN (USA) |
| Atomizer Aerosol Generator | Topas ATM 228 | – | – | – | Vadnais Heights, MN (USA) |
| Field Calibration System | Topas FCS 249 | – | – | – | Vadnais Heights, MN (USA) |
| Condensation Aerosol Generator | Topas SLG 270 | – | Particles up to 10 μm | – | Vadnais Heights, MN (USA) |
| Atomizer Aerosol Generator | Topas ATM 222 | – | – | – | Vadnais Heights, MN (USA) |
| Dynamic Dilution System | Topas DDS 560/C | – | – | – | Vadnais Heights, MN (USA) |
| Atomizer Aerosol Generator | Topas ATM 221/D | – | – | – | Vadnais Heights, MN (USA) |
| Solid Aerosol Generator | Topas SAG 415 | – | – | – | Vadnais Heights, MN (USA) |
| Test systems (filter test rigs) | Topas ABP 115, AFC 131, AFC 132, AFC 132 QC HEPA, AFC 133, AFC 135, AFC 136, AFS 150, | – | – | – | Vadnais Heights, MN (USA) |
| Standard Devices (aerosol/measuring instruments) | Topas ATM 240/L, ATM 240/S, ATM 243, DIL 540/B, DIL 541/B, DIL 545/B, DIL 546/B, GMS | – | – | – | Vadnais Heights, MN (USA) |
| Electrostatic Neutraliser | Topas EAN 581 | – | – | – | Vadnais Heights, MN (USA) |
Additional services
Quality
Topas is an ISO 9001 certified company. Devices and test systems meet national and international standards such as ISO, EN, DIN and ANSI as well as guidelines including OECD, FDA and VDI.
| Evidence | Vadnais Heights, MN |
|---|---|
| ISO 9001 |
History
- 1991
Founding of Topas as a specialist in particle and aerosol technology
Establishment of the US business; Topas has been active on the American market for over 30 years, location Topas Inc. in Minnesota