Diesel Particulate Matter (DPM) Cassettes

Designed for Sampling in Atmospheres where it is necessary to Separate DPM from other Respirable Dust.

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DPM Cassettes are not just for diesel particulate matter! Use DPM Cassettes in atmospheres where it is necessary to separate sub-micron particles such as DPM, carbon nanotubes (CNTs), and carbon nanofibers (CNFs) from other respirable dust. 
DPM Cassettes meet NIOSH Method 5040 specifications and may be used with a cyclone to screen out large particles to prevent filter overload.
SKC Diesel Particulate Matter Cassettes are designed for sampling in atmospheres where it is necessary to separate DPM from other respirable dust (such as coal dust).
Single-use SKC DPM Cassettes are tamper-evident sealed to ensure sample integrity. Each streamlined plastic cassette comprises an impactor plate, impaction substrate, and two heat-treated quartz filters. The impactor screens out respirable particles > 1 µm. 
Particles less than 1 µm are collected on the first filter and the second filter serves as a dynamic blank for correction of absorbed organic carbon. Samples are analysed for organic and elemental carbon content using a highly sensitive Evolved Gas Analysis (EGA) technique with thermal-optical analyser as specified in NIOSH Method 5040.


  • Collect sub-micron diesel particles
    • Internal Impactor with precision sapphire orifices screens out particles >1.0 µm meeting the new NIOSH REL for CNTs/CNFs of 1.0 µm/m2 
    • Sub-micron particles collect on heat-treated quartz filter
  • Meets NIOSH Method 5040 specifications 
  • Performance evaluated at 1.7 L/min and 2.0 L/min 
  • Sample integrity assured
    • Heat-treated quartz filters assure low carbon background 
    • Single-use cassettes 
  • Tamper-evident sealed


  • Atmospheric air sampling