N-FRM Sampler

The ARA N-FRM Sampler is a portable, battery-powered particulate sampler that establishes a new class of air sampler we call “Near FRM”. While it is not a certified US EPA Federal Reference Method sampler, the N-FRM Sampler delivers FRM accuracy at a fraction of the cost. It is the first of its kind to complete 24-hour sampling periods utilizing only battery-power at 16.7 LPM.

The compact sampler collects 24-hour TSP, PM10, or PM2.5 filter samples and can simultaneously measure and log all real-time sampling parameters, meteorological data, and particulate counts. The N-FRM Sampler can be equipped with an optional PEET Anemometer and is capable of operating in directional sampling mode. It can also be equipped with a light scattering particle sensor to log temporal particulate variations.

PN 101-000  PM 2.5 N-FRM Sampler
PN 102-000  PM 10 N-FRM Sampler
PN 103-000  TSP Sampler


  • •  Versatile inlet configurations for PM2.5, PM10, or TSP sampling
  • •  FRM quality 24-hour sampling at 16.7 LPM
  • •  Cost effective at a fraction of traditional site-based FRM samplers
  • •  Defensible data logging capabilities for all sampling parameters
  • •  Deployable compact size and battery power allows for remote use
  • •  Flexible mounting options for rapid deployment
  • •  Real-Time Particle Sensor (RTP) option for PM10 and PM2.5
  • •  Directional sampling capability with meteorological sensor
  • •  Sensor-only mode enables long-term meteorological & dust surveys
  • •  Easy data retrieval via USB flash drive
  • •  Programmable with intuitive user interface
  • •  Low maintenance particulate separators require no grease or oil
  • •  Rechargeable batteries complete full charge in 1 hour
  • •  Uses standard FRM 47mm filter media and cassettes


  • Urban Air Monitoring Networks
  • National Air Monitoring Networks
  • Roadside Air Monitoring
  • Industrial Perimeter Monitoring
  • Environmental Impact Assessments
  • Research Projects
  • Short Term Hot Spot and Emergency Monitoring
  • Industrial Hygiene


  • Active Flow Control Range: 10-20 LPM
  • Nominal Flow: 16.7 LPM
  • Flow Accuracy: +/- 2%
  • Flow Precision +/- 2%
  • Li-Ion Batteries (2): 18V / 5A each
  • Recharge Time: 1 hour
  • Battery Operation: 30+ hours
  • Data Output: USB Drive
  • Sampler Dimensions: 10” x 12” x 7”
  • Sampler Weight: 15 lbs
  • Shipping Weight: 25 lbs


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