Particle counter

Which type of particle counter is used as per iso 14644-1:2015 guideline.

Optical partical counter
The nature of particle counting is based upon either light scattering, light obscuration, or direct imaging. A high intensity light source is used to illuminate the particle as it passes through the detection chamber. The particle passes through the light source (typically a laser or halogen light) and if light scattering is used, then the redirected light is detected by a photo detector.


As per iso guideline LSAPC is required to measure particles.

: The specifications for the LSAPC are given in ISO 21501-4:2007.

LSAPC stands for?

Light Scattering Air Particles counter