Particle Count?

Hello sir,
What’s the difference between “Differential particles” and “Cumulative particle” that shows on the display of Particle counter for each particle size? and which one of them considered my result to write it in the Environmental report?


Differential particles are the particles of particular size as 0.5 micron while cumulative is the number of particles below the 0.5 micron. You have to consider differential particles in your report.

Thank you very much sir