The leader in cloud and aerosol Measurement Technologies.


Brechtel designs and develops aerosol measurement devices and software to facilitate research on climate change and air quality

  • Accelerating Your Science

  • Accelerating Your Science

    The ACCESS line of portable aerosol measurement devices enables vertical profiling and other Unmanned Aerial Vehicle (UAV) sampling of key aerosol properties. Learn more about UAV sampling applications and case studies.

  • Cloud Sampling

  • Cloud & Aerosol Sampling

    Probe real clouds and measure actual cloud condensation nuclei (CCN) using the automated GCVI and the suite of aerosol measurement tools  from Brechtel. Learn more about aerosol-cloud sampling applications here along with detailed case studies.


  • Health Impacts
    Human Health
  • Human Health Challenges of PM2.5

    Particles smaller than 2.5 micrometers can reach deep into the lung and cause respiratory illness. Some particles are so small that they can pass into the blood system where they can damage the nervous system. Tools like the mSEMS, TAP and PILS can characterize the key properties of aerosols that impact health.

Our Story

Over the Years

  • 1983 - Founded

    Fred Sr. starts with one vacuum brazing furnace in a garage in Fremont, CA.

  • 2002 - First Product

    Very first isokinetic inlet system ships to DOE for the G-1 research aircraft.

  • 2014 - Brown & Black Carbon

    First shipment of the TAP to NASA and UK Met Office.

  • 2021 - Pandemic Comeback

    After lengthy shutdown, sales surge and team grows to 18 terrific people! It’s great to be back.

We've Worked With

  • Health Impacts

    Air Quality Monitoring

  • Air Quality Monitoring

    Air Quality Monitoring

    The health impacts of ultrafine (or nano-) particles are still poorly understood. The very smallest particles are thought to pass through the walls of the human respiratory system and pass into the blood stream, where they can damage the nervous system. Particles smaller than 100 nanometers are difficult to measure since they are too small to be directly detected by light scattering techniques. Tools like the mSEMS, MCPC and PILS can characterize the key properties of aerosols that impact health.

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