...Roger D. Lewis; Jason Kennedy; Mason Andruskiewicz; Christopher A. Brown; Sridhar Condoor A need exists to develop realistic surfaces, with differing degrees of surface roughness, to standardize methods for sampling and cleaning of environmental contaminants. This study reports on development...

...Roger D. Lewis; Daren Chen Understanding the relationship among allergies, asthma, and indoor air allergen triggers increasingly require use of standardized and evidence based exposure assessment methods. Exposure assessment for common indoor allergens, however, is often limited by use of surface...

...Kevin Ashley; Michael J. Brisson; Kenneth T. White This article summarizes the body of available standards for sampling of chemical and biological agents on workplace surfaces, including skin. These standards consist of voluntary consensus standards such as those promulgated by ASTM International...

... of it, or the frequency of the used ultrasonic-probe are important. This will be demonstrated by showing results from testing and incoming inspection. KEYWORDS: steel cleanliness, ultrasonic immersion testing, structure, surface Introduction Bearings and gears belong to the group of highest loaded machine components...