The Particle Counter range from Pi is a world first. The first to allow multiple sensors on a single analyser. The CounterSense is a sophisticated online particle counter with the capability to size and count particles from 2-127 microns and to count from 2-750 microns. The FilterSense has the capability to size and count particles from 2-127 microns, and the ParticleSense is a standalone counter with the capability of counting and sizing particles from 2-125 microns.