HeNe Laser Particle Counters
If your cleanroom process, testing, or lab requires monitoring airborne particles down to .1 micron, the best solution is to use a He-Ne laser based particle counter, which offers increased accuracy in the .1-10 micron particle size range over traditional laser diode based particle counters.
The Helium-Neon (HeNe) gas laser produces an extremely bright red <!–[if gte vml 1]>