Stack Testing for Particulate
Stack Testing for Particulate
Particulate testing calculates the amount of particles that are being discharged from your stack. We can test for:
- Total particulate
- Filterable particulate
- Condensable particulate
- Particulate by size (PM10 and PM2.5)
Filterable particulate is captured on a filter at stack temperature. This includes solids and some liquids.
Condensable particulate matter (CPM) will pass through the filter as a gas at stack temperature and condense into solid particulate upon cooling.
Total particulate is the sum of the filterable and condensable fractions.
We can test for particulate in 3 size fractions. They are:
- Aerodynamic diameter
> 10μm - Aerodynamic diameter
< 10μm and > 2.5μm - Aerodynamic diameter
< 2.5μm
The PM10 fraction of the sample comprises the sum of all the particles less than 10μm.
The PM10 fraction is significant as these particles pose the greatest health hazard to humans.
Particulate matter is a form of air pollution and must be regulated to ensure our ambient air is kept clean. The amount of particulate emitted by your stack will be part of your resource consent.
Regular stack emissions testing will allow you to show you are compliant and safe.
We hold IANZ accreditation for the following methods related to particulate testing:
- ISO 9096:2003
Stationary source emissions – Determination of concentration and mass flow rates of particulate material in gas carrying ducts; manual gravimetric method - USEPA Method 5
Determination of particulate emissions from stationary sources - USEPA Method 17
Determination of particulate matter emissions - USEPA Method OTM 27 and 201A
Determination of PM10 and PM2.5 emissions from stationary sources (constant sampling rate procedure) - USEPA Method OTM 28 and 202
Dry impinger method for determining condensable particulate emissions from stationary sources