In what scenario might you use a 'filter catch' in air sampling?

Using a 'filter catch' in air sampling is particularly relevant when the goal is to collect a wide range of airborne particles, such as asbestos fibers. This method involves utilizing a filter medium that effectively traps these particles while allowing air to pass through, ensuring that a representative sample of the airborne contaminants is captured for analysis.

The process of air sampling is critical in asbestos monitoring, as it enables technicians to assess the concentration of asbestos fibers in the air, which is vital for evaluating exposure risks. By collecting a comprehensive range of particles, the filter catch allows for accurate measurement and analysis, ensuring that any harmful levels of asbestos can be identified and addressed.

In this context, other scenarios, such as monitoring chemical spills or measuring temperature variations, do not typically use a filter catch method as they require different sampling techniques tailored to substances or variables specific to those situations. Similarly, humidity control is not achieved through filter sampling, as it involves environmental conditioning rather than capturing airborne particles. Thus, the use of 'filter catch' is best suited for monitoring airborne particles, especially in situations concerning potential asbestos exposure.