TSI 140-HFSS High-Flow Sampling System


The High Flow Sampling System (HFSS) Model 140-HFSS is an accessory designed to be used with QCM-MOUDI™ Impactor Model 140 when sampling ambient air at hot and humid environmental conditions.

The 140-HFSS can reduce relative humidity of the sample air at a flow rate of 10 L/min from as high as ~100% at 40 °C to below 80% at normal room temperature (i.e. 25°C), avoiding water condensation in the sampling line.


SKU: TSI140-HFSS Tags: , , , , ,



  • Ideal for sampling during hot and humid ambient conditions
  • Complete system ready for installation in the field
  • Standard omnidirectional TSP inlet
  • High Flow Rate (up to 10 L/min)
  • Nafion® single-tube dryer with high particle transmission efficiency
  • Continuous operation without desiccants


  • PM ambient sampling for air quality monitoring
  • Sampling of high humidity aerosols