Degree Controls' COVID-19 Response and Action Degree Controls' COVID-19 Response and Action
Home / DegreeC Blog / Airflow Visualization and Filter Testing for Safe Clean Air
Airflow Visualization and Filter Testing for Safe Clean Air

Airflow Visualization and Filter Testing for Safe Clean Air

HEPA Filtration Helps Prevent Airborne Transmission of Infectious Diseases

A HEPA filter, high-efficiency particulate air filter, is used to describe a filter that exhibits a minimum efficiency of 99.97% at a test aerosol diameter of 0.3 micrometers, assuring a high level of protection against the transmission of airborne diseases. HEPA filtration is widely applied in laboratory, pharmaceutical, and healthcare environments, as well as in HVAC systems in commercial buildings and industrial facilities.

Filter Testing Ensures People, Processes and Products are Safe

The air filtration system is only as good as the filter. Qualification testing of HEPA filters is performed upon installation using visualization products, and periodic in situ testing is done to ensure that filters are in good operating condition, satisfying the required level of efficiency without any leaks.

    HEPA Certification with DegreeC Foggers

    Add DegreeC's visualization products to your certification team’s toolset to test HEPA filters, detect leaks, and monitor turbulence in ventilation systems. We offer FlowMarker™ and °C Breeze devices for airflow pattern testing, delivering the following performance benefits:

    • Safe, sanitary, FDA-GRAS fog generators provide excellent flow visibility.
    • Foggers are easy to operate, portable and lightweight. 
    • Testers can move around and evaluate airflow from different perspectives. 
    • A remote control system is available should users require hands free operation for lengthy setups. 
    • A wide selection of nozzle types and extensions are available to meet distinct application needs such as:  
    • Direct fog through small orifices for hard to reach ingress and leakage points 
    • Enhanced visualization for low velocity applications 
    • Planar fog flow for face velocity testing of chemical fume hoods

      VIDEO: Fog Generators for HEPA Filter Certification

      Airflow Products for HEPA Filter Testing

      C Breeze Fogger

      °C Breeze Fogger

      The °C Breeze Fog Generator is used for air flow pattern visualization testing. It uses low impulse, thermally neutral fog. This handheld device allows mobility in large areas or remote locations where a direct connection to power is not practical. 

      FlowMarker Fog Generator

      FlowMarker™ Fogger 

      The FlowMarker™ is a portable, lightweight fogger for air flow patter visualization testing. Generating fog at ambient temperature, the FlowMarker™ does not serve as a heat source and does not cause air to rise, but its fog follows the natural undisturbed movements of air.

      F-Series Airflow Sensor

      F-Series Sensor

      The F-Series is a platform of non-directional air velocity and temperature sensors optimized for demanding applications including laboratory, HVAC, high-performance electronics, and more. The micro-sized particles provide excellent air flow visibility without premature settling or dispersion. 

      DegreeC manufactures both instrumentation-class airflow sensors and sensors embedded in some of the world's most demanding products. These airflow monitoring solutions are for electronics, laboratory, building, and industrial safety applications to bring air precisely where it's needed. We also develop custom fan and heater controllers for OEM applications.

      Consult with a Specialist

      * indicates required

      Please select all the ways you would like to hear from Degree Controls, Inc.:

      You can unsubscribe at any time by clicking the link in the footer of our emails. For information about our privacy practices, please visit our website. We use Mailchimp as our marketing platform. By clicking below to subscribe, you acknowledge that your information will be transferred to Mailchimp for processing. Learn more about Mailchimp's privacy practices here.


      Jan Fischer  
      Having joined DegreeC in 2009, Jan has over a decade of experience consulting professionals in a wide range of industries on methods for using airflow sensors and instrumentation to collect data for testing and analysis.