Quantitative fit testing is the preferred testing method. The ambient aerosol condensation nuclei counting (CNC) method, using a Portacount® Plus instrument, has been selected as the quantitative fit ...

WHEN OSHA's revised Respiratory Protection Standard for General Industry, 29 CFR 1910.134, became effective on April 8, 1998, it provided employers with an all-inclusive reference source for fit ...

The FDA expanded the marketing indications of a line of diagnostic tests to include checks for Lyme disease—the first cleared by the agency to use a new parallel testing method. Developed by Zeus ...

Soon after the beginning of the systematic investigation of human memory in the nineteenth century, scientists classified different types of memory. One of the pioneers in this field, the German ...