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Particulate matter

The Earth’s atmosphere contains atmospheric particulate matter, also known as particulates or particulate matter ( PM). There are different types and sizes of particulates in the atmosphere like small gaseous Contaminants, Particulate Contaminants (smog, smoke, ashes and dust) and Biological Contaminants ( bacteria, pollen and mold spores). Human activities generate significant amounts of particulates  for example, burning fossil fuels in vehicles, power plants and various other industrial processes .

Look for our Dust Sentry products at  www.dustsentry.nl 

Particulate measurement  is divided in 3 levels:

  • PM 10  (particles of 10 micrometers or less)
  • PM 2.5 (particles of 2.5 micrometers or less)
  • PM 1     (particles of 1 micrometer or less)

Various governments have created regulations both for the emissions allowed for certain types of pollution sources and for the ambient concentration of particulates.  The European Union has set limits for particulates in the air:



Since 1 January 2005


From 1 January 2015

Yearly average 40µg/m³ 25 µg/m³
Daily average (24-hour) 50 µg/m³ none
Allowed number of exceedences per year 35 none

Emission areas europe


Though urban air has become cleaner on average, al lot of areas still frequently violate the particulate standards. Increased levels of fine particles is consistently and independently related to most serious health effects like asthma, lung cancer, cardiovascular issues, birth defects and premature death. Inhaling very small particles ( PM 2.5) can lead to very deep penetration of the lungs like the gas exchange regions . But also larger particles (PM10) will not be filtered by the mouth and nose and can settle in the lungs and can cause health problems.

In order to make the earth a healthier place a lot of nationwide studies have resulted in more  and more awareness regarding the environmental impact of particulates. Much of new developments and existing processes are being reviewed if they can comply with the Ambient Air Quality Standards. You can read more here.


Teesing provides a wide range outdoor air quality monitors. The Dust Sentry is a lightweight purpose-built outdoor monitor for measuring and reporting outdoor ambient dust and particulate - PM10, 2.5, 1, and TSP - continuously and in real-time. It can integrate noise, wind and weather sensors, and has a range of communication options for seamless connectivity.

This system is worldwide used for:

  • Roadside PM surveys
  • Nuisance dust detection
  • Industrial site compliance monitoring
  • Construction / Mining sites
  • Community exposure studies
  • Workplace monitoring
  • Smoke / Biomass burn-off


  • ISO-9001-2008-JASANZ
  • MCERTS MC13023500 :MCERTS is a formal certification scheme under European Standard EN 45011. Sira Environmental Ltd runs this scheme on our behalf.


  • NIWA AK2012-048
  • Performance standards for indicative ambient particulate monitors

Please contact us for more information!


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More information?

More information about measuring ambient dust and particulates? 
Contact our specialists:

NL: +31 70 413 07 50
CN: +86-(0)10-60576210
USA: +(1) 973 383 0691
TW: +886-(0)3-5600560
Mail  sales@teesing.com