Handheld airborne particle counters measure particle concentrations across defined size channels to support indoor air quality assessments and condition monitoring.
Spycor Environmental lists the Extech VPC300, which measures six particle-size channels from 0.3 to 10 micrometers at a sample flow of 0.1 CFM, plus air temperature and relative humidity. Its built-in camera captures photos and video for reporting. IAQ professionals and remediation contractors can review sampling modes, data storage, and calibration documentation before selecting an instrument for their measurement task.