FAQ - General

Cumulative Particle Counts

Question
What is the difference between differential data and cumulative data?

Answer

Differential data is the particle data in a specific particle size channel; the cumulative data is the total particle data in all particle size channels.

Example: Your instrument shows 200 particles in the 0.1 um channel and 35 in the 0.2 um channel. Your differential data is 200 particles > 0.1 um but < 0.2 um, and 35 particles > 0.2 um. The cumulative data is 235 total particles (200 + 35) > 0.1 um.

To better understand how to interpret data, purchase Understanding Liquid Particle Counters.