The Technology Leader in Personal Monitoring Badges

The most cost-effective and convenient way to monitor chemicals in a worker's personal breathing zone.

The Assay Technology Experience

We provide the most convenient and broadest range of air samplers, at the best price.

We specialize in chemical challenge testing of respirator cartridges,

filters, or any media designed to remove chemical contaminants from an air stream.

The Miller-Nelson HCS-501

is the standard atmosphere generator referenced in NIOSH and other standard test procedures for evaluation chemical capacity of respirator cartridges.

About Us

Assay Technology maintains a long-held position as the technology leader for personal monitoring of chemicals in the workplace.

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Assay Technology chemist working

Assay Technology Labs

As the technology leader in personal monitoring badges, Assay Technology's role extends from developing and manufacturing the monitors all the way through the analysis of samples. Our two AIHA-LAP, LLC accredited labs provide personal air samplers to industrial hygienists and analyze the contents of returned samplers. By handling every step of the process, we are able to provide the most convenient and cost-effective service to our customers.

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Miller-Nelson Laboratory

Miller-Nelson Laboratory has been testing air purifying respirators since 1972 and has performed over 17,000 individual tests using over 450 different materials. Currently we perform all the NIOSH and European gas and vapor respirator qualification tests for the vast majority of respirator manufacturers, as well as their suppliers of sorbents. We also have provided service life information to over 500 end users.

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