Particle counters measure particles at what micron ratings?

Particle counters are devices used to measure the concentration of particles in a given volume of air or fluid, and they often have specific micron ratings that indicate the size of the particles they can detect. The selected answer contains the micron ratings of 4, 6, and 14, or alternatively 2, 5, and 15, which align well with commonly used specifications in various applications, including cleanroom environments and industrial processes.

The micron ratings in answer C reflect common benchmarks in particle counting, ensuring that the devices can effectively measure different sizes of particles, which is crucial for maintaining air quality and cleanliness in sensitive environments. Each size corresponds to specific monitoring standards that apply to the industry to ensure that air or fluid remains within acceptable cleanliness levels.

The significance of having these specific sizes lies in their relevance to health, safety, and environmental standards. For example, smaller particles (like those measured at 2 microns) can penetrate human lungs and are often more harmful, making their detection essential. The inclusion of intermediate sizes (such as 5 and 15 microns) allows for a comprehensive understanding of the particulate landscape, which is vital for achieving compliance with regulatory standards and preventing contamination in critical applications.

This insight into why the chosen answer is appropriate