Two-Stage Aerosol Collector

SASS 4100 Two-Stage Aerosol Collector

The SASS® 4100 is a highly efficient, two-stage filter-based aerosol collection device. It is the highest-capacity portable aerosol dry collector in production. Many applications require the collection and analysis of aerosol particles, ranging from environmental air sampling and counter-terrorism to epidemiology, medicine, and agriculture. These applications typically involve the monitoring or collection of airborne plant, animal or human pathogens. But aerosol sample analysis is frequently plagued by three problems:

  • The targeted pathogen is present at a very low concentration
  • The collection process involves too small an air sample to be statistically valid
  • Available bioassay methods are not sensitive enough

By concentrating the sampled air, the SASS 4100 overcomes these problems.

World Class Sampling Performance

  • Features
  • Applications
  • Specifications


Product Features

  • No moving parts, other than the primary fan
  • Maintenance is minimal
  • Wide operating temperature range
  • Structure is comparatively clog resistant
  • Sampled air volume is maximized, improving collection statistics
  • User-specified automated protocols
  • Wireless control option
  • Long-life primary and rechargeable battery options
  • Easy decontamination, including fan rotor
  • Compact and lightweight



  • Medical facilities
  • Homeland security
  • Military
  • Power plants



Primary airflow: 4,000 liters/min sampled uniformly from around the concentrator’s circumference.
Secondary are collection rate HEPA-style filter: 49 LPM.
Bioaerosol filter: 265 LPM.
Filter collection efficiency HEPA-style filter: More than 95% for > 0.3 µm diameter.
Bioaerosol filter: 50% at 0.5 micron diameter.
Filter media size 4.4 cm active diameter filter, mounted in 6.0 cm diameter injection-molded holder.
Filter mass and composition HEPA-style filter: 2.2 mg/cm2 for active media; 8.6 mg/cm2 including backing scrim

Bioaerosol filter: 12 mg/cm2

Both filters are composed of polypropylene electret micro-fiber.
Filter mount Hat-shaped fixture that locks onto the device’s baseplate
Overall size 38 cm high x 25.4 cm diameter max.
Weight 6.32 kg (13.9 lbs.)
Operating temperature range -40°C to 70°C
Operating life ECM fan rotor is only moving part. A bearing life of 70,000 hours is expected at 40°C.
Power consumption
  • 160 watts at 24 VDC.
  • 100 to 230 VAC lump-in cord AC/DC converter supplied.
Sound level 72 dBA @ 1 meter radius on inlet equatorial plane.
Mounting Quick-detach tripod legs; 0.53m to 1.46m adjustable height.
  • Hard shell carrying case.
  • Electret sample filter assembly (for stand-alone operation).

CBRN International reserves the right to change specifications on any of the devices mentioned without prior notification.