Free Webinar: Improving the Quality of Industrial Hygiene Air Sampling Data Through Proper Field Practices

TestAmerica is hosting a free webinar on “Improving the Quality of Industrial Hygiene Air Sampling Data Through Proper Field Practices” on September 20. The webinar will be presented by Mike McGee, CIH and will provide a basic overview on improving the quality of IH data and avoiding common pitfalls.

NTP (Normal Temperature & Pressure) Definitions

A few questions have arisen regarding the term NTP (Normal Temperature and Pressure). The following table helps to sort any potential confusion.

Agency Pressure Temperature Traditional

(Chemistry/Physics) 29.92 “Hg

760 mm Hg 492 ˚R

273 ˚K ACGIH

(Ventilation)

29.92 “Hg

760 mm Hg 530 ˚R

294 ˚K NIOSH/AIHA

(Traditional) 29.92 “Hg

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