ISO 21501-3:2019

Apply For Services

ISO 21501-3:2019 is an international standard detailing a method for calibrating and verifying light extinction liquid-borne particle counters (LELPCs). These instruments are used to measure the size and concentration of particles suspended in liquids, typically ranging from 1 to 100 micrometers. The standard covers various aspects like size setting error, counting efficiency, and calibration intervals.