Consideration on Particle Sedimentation

basic information

For more details, please refer to the PDF document or feel free to contact us. Particles settle due to gravity. When the particle size becomes small, the diffusion coefficient becomes significant. Smaller particle sizes result in longer suspension times. Generally, particle counters measure suspended particles, so constant-speed suction becomes an important factor. Roughly speaking, particles larger than 5 micrometers do not fit this concept. Please be aware of the behavior of particles based on their size. - Particles around 1 micrometer in biological exhalation secretions, which have a density close to 1, are difficult to diffuse and tend to remain suspended. Dead space and continuous supply sources lead to the concentration of particle density. However, it is not straightforward to determine what form droplets like secretions will ultimately take and how their transit state will be, but if they eventually become pseudo-solids, this concept applies. - Conversely, larger particles tend to fall quickly in clean rooms (not exclusively, but generally), making them difficult to sample with particle counters and easy to overlook. - By understanding the characteristics of particles, the data from particle counters can provide more effective information.

Price range

Delivery Time

Applications/Examples of results

For more details, please refer to the PDF document or feel free to contact us. There are particles that cannot be captured by particle counters in clean room monitoring.