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Overview ISO 21501-4:2018 specifies calibration and verification methods for light scattering airborne particle counters (LSAPC) used in clean spaces. The standard covers single-particle light intera…
Overview ISO 21501-1:2009 defines performance and test methods for light scattering aerosol spectrometers (LSAS) used to determine particle size distribution and particle number concentration of aero…
Overview - ISO 21501-3:2019 (LELPC) ISO 21501-3:2019 specifies calibration and verification methods for the light extinction liquid-borne particle counter (LELPC) used to determine particle size dist…
Overview ISO 21501-2:2019 specifies calibration and verification methods for light scattering liquid-borne particle counters (LSLPCs) that measure particle size and number concentration of particles…
Overview ISO 21501-1:2025 - Determination of particle size distribution - Single particle light interaction methods - Part 1: Light scattering aerosol spectrometer (LSAS) defines the characteristics,…
1 Scope This part of ISO 21501 specifies characteristics of a light scattering aerosol spectrometer (LSAS) which is used for measuring the size, number concentration and number/size distribution of p…
1 Scope This part of ISO 21501 describes a calibration and verification method for a light scattering liquid-borne particle counter (LSLPC), which is used to measure the size and particle number conc…
1 Scope This part of ISO 21501 describes a calibration and verification method for a light extinction liquid-borne particle counter (LELPC), which is used to measure the size and particle number conc…