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Regular maintenance is essential for system longevity, reliability, and accuracy. Remember to replace motor brushes every 300-500 hours depending on your application.  Replace gaskets that are worn or damaged. Inspect all electrical connections and wires.  Any damaged connection or wire should be replaced immediately to avoid injury or equipment failure. It is  a good practice

Total Suspended particulate sampling is a federal reference method defined in 40 CFR 50, appendix B, appendix G , and appendix J.  This method calls for the use of a high volume air sampler to collect particles with an aerodynamic diameter of approximately 30 µm or less.  The design of the high volume air sampler