What is NIOSH Method 7400 primarily used for?

NIOSH Method 7400 is primarily designed for determining asbestos fiber concentrations in air. This method is a widely accepted protocol used in occupational health and safety assessments, particularly in environments where asbestos is suspected to be present. The method involves collecting air samples through filters, which are then analyzed under a microscope to quantify the number of asbestos fibers present.

This approach is critical for ensuring that workplaces comply with safety regulations and to protect workers' health by assessing exposure levels. Monitoring air for asbestos fibers is essential because inhalation of these fibers can lead to serious health issues, including asbestosis and lung cancer. By focusing on the concentration of asbestos fibers in the air, NIOSH Method 7400 provides vital data that can inform necessary safety measures and interventions in environments where asbestos may pose a risk.