Ambient Air Quality

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Thermo Scientific TEOM 1405-F FDMS
Ambient Air Monitor

The TEOM® 1405-F Ambient Particulate Monitor with FDMS is a mass measurement monitor that incorporates the patented Tapered Element Oscillating Microbalance (TEOM) to measure particulate matter mass concentrations continuously. The TEOM 1405-F Monitor is a true “gravimetric” instrument that draws ambient air through a sample filter for collection at a constant flow rate. The monitor continuously weighs the filter calculating near real-time mass concentrations. The 1405-F can be used to sample PM-10 by using a standard PM-10 inlet or can be used for PM-2.5 sampling by adding a cyclone in addition to the PM-10 inlet.

The 1405-F TEOM Monitor consists of a Filter Dynamics Measurement System (FDMS) and TEOM mass sensor housed in a single-cabinet compact enclosure, and network-ready configuration that includes a control system with touchscreen user interface. The TEOM 1405-F utilizes FDMS technology to provide a representative determination of the mass concentrations of the PM as it exists in ambient air. The FDMS unit automatically determines mass concentration measurements that account for both non-volatile and volatile PM components.

Quanity: TBD

For equipment availability, please contact:
Farshid Farsi
US EPA - TAMS Center
4220 S. Maryland Parkway, Bldg C
Las Vegas, NV 89119

  • PM 1
  • PM 2.5
  • PM 10
  • Air quality monitoring networks, including background sites
  • Special studies and supersites
  • Routine input for air quality index
  • Remediation projects (Superfund, hazardous waste)
  • Indoor air, exposure chamber, and industrial hygiene measurements
  • In and around industrial and material handling facilities

For technical equipment support and troubleshooting, please contact:
Chris Lee, TAMS Co-Director

For quality assurance support, please contact:
Melinda Ronca-Battista


Kent Bartholomew
If you would like to view tribal examples of quality assurance project plans, standard operating procedures or other technical supporting documents, please visit: