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Keeping track of toxic exposure

This HND piece examines the activities and technology involved in monitoring exposure to toxic substances. Pioneers of public health introduced this concept around 100 years ago, but it would take official government agencies such as EPA and OSHA to take it to the next level.

OSHA promulgates Permissible Exposure Limits for more than 500 substances, and most of these are based on an 8-hour time-weighted average exposure. Thus, some means of recording this data and calculating such averages is implied--even if such technology was not readily available when these limits were first introduced.

We then segue into some current products for data logging and new developments.

Read the complete article.


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