VIRUSCDC

Did you know? “Equivalent Area Diameter” A particle is a 3-dimensional object, and only if it is spherical can its exact size be determined by its diameter. The size of particles measured on a witness plate...

Particle counters are not counting particles Light Scattering Airborne Particle Counters (LSAPC) are not counting every single particles physically but measures scattered lights from particle surface after passing by...