Particle Counting RP Revision
Share thisA newly updated Recommended Practice (RP) from the Institute of Environmental Sciences and Technology (IEST) provides guidance for calibrating and characterizing the performance of optical particle counters (OPCs) that detect and measure the size of single particles in air and other gases.
IEST-RP-CC014.2: Calibration and Characterization of Optical Airborne Particle Counters presents a standardized calibration methodology to minimize variability among different OPCs. This is important because contamination control professionals often need to use different OPCs operating at different locations or different OPCs at the same location at different times, but they must then contend with discrepancies that arise from measurement variability among those OPCs. Applying a standardized calibration methodology helps users obtain more reliable data from OPCs — data that are used to verify cleanroom and clean device classification, to characterize air filter performance, to verify installed filter system integrity, and to characterize particle emissions from potential contamination sources.
Source: IEST