Workplace exposure — Guide
for the use of direct-reading instruments for aerosol
monitoring
Part 2: Evaluation of airborne particle
concentrations using Optical Particle
Counters
This Technical Report describes the principle underlying evaluation of one or more health related aerosol
fractions using an optical particle counter and details its limits and possibilities in the field of occupational
hygiene.
The method complements conventional long-term aerosol particle sampling and offers possibilities of:
-instantaneous (direct reading) measurement;
-time-related monitoring;
-investigation of space-related aerosol evolution (mapping);
-assessment of particle size distribution.