Can I reduce the flow rate on my particle counter? The 1 CFM is too high and may damage my parts testing.

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Can I reduce the flow rate on my particle counter? The 1 CFM is too high and may damage my parts testing.

No, you cannot reduce the flow rate on your instrument. Particle counters are calibrated at specific flow rates and NIST-standard polystyrene latex spheres (PSLs), so if the flow rate changes, the particle sizing changes. Specifically, when the flow rate decreases, particles size larger; when the flow rate increases, particles size smaller.