24 hour measurements.

Sometimes the term "suspended matter" is used. Measurements of TSP are replaced by measurements of PM10 and PM2.5, because the limit values now refer to these yardsticks for particle concentrations.

Technical description of measuring method

Sampler: Open downward pointing sampling tube. Diameter 4 cm^Ø. Face velocity 0.5 m/sec.

Method: Gravimetric 

Also see

• Measurement methods for PM (ie PM10 and PM2.5)
• Limit values