What type of filter is required for air samples?

The requirement for a filter for air samples is primarily based on the need to effectively capture lead particles while allowing for proper airflow and sampling volume. The 37 millimeter cassette mixed cellulose ester (MCE) filter is specifically designed for air sampling and is effective in trapping fine particulate matter, which includes lead dust. This type of filter has the right pore size and surface characteristics to ensure that the samples collected represent an accurate measurement of airborne contaminants.

In addition to its filtration capability, the mixed cellulose ester filter is compatible with the sampling cassettes commonly used in occupational health and environmental monitoring, making it ideal for use in field sampling scenarios. Its size allows for adequate sample collection without significant resistance to airflow, which is crucial for obtaining reliable and valid results.

Other filters, while they may have their uses in different contexts, do not offer the same balance of efficiency and effectiveness for the specific task of air sampling for lead, making the mixed cellulose ester filter the preferred choice in this application.