AHAM AC-4-2022: Testing Air Cleaners for Chemical Gases
We spend about 87% to 90% of our time inside buildings; consequently, maintaining healthy indoor air quality is critical. Air cleaners can help improve indoor…
ANSI/AHAM AC-1-2020: Portable Air Cleaner Performance
Americans spend approximately 90% of their time indoors, where certain air pollutants can accumulate. Sources of indoor air pollution range from wildfire smoke, dust, building…
ISO 14644-4:2022 – Cleanroom, Design & Construction
Not all particles are the same; not all cleanrooms are the same. There are different standardized classes of cleanrooms based on the number and size…
ASHRAE Standards
The American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) is an international organization representing over 50,000 members. As a standards-developing organization, ASHRAE is…
Changes to ASHRAE 52.2-2017
ASHRAE 52.2-2017 – Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size has been released, revising and superseding the 2012 version…
ISO 14644-2 2015 Revision of ISO 14644-2:2000
This revision of ISO 14644-2 2015 Monitoring to provide evidence of cleanroom performance related to air cleanliness by particle concentration emphasizes the need to consider a…