ISO Issues Method to Quantify Air Concentrations of Carbon Black and Amorphous Silica in the Nanoparticle Size Range in a Mixed Dust Manufacturing Environment

The International Organization for Standardization (ISO) has published standard ISO/TS 21361:2019, “Nanotechnologies — Method to quantify air concentrations of carbon black and amorphous silica in the nanoparticle size range in a mixed dust manufacturing environment.”  The standard provides guidelines to quantify and identify particles of carbon black and/or amorphous silica in air samples collected in a mixed dust industrial manufacturing environment.  The guidelines describe air sample collection and the characterization of the particles in the air samples by both particle size and elemental composition.  ISO notes that although the technique described is for carbon black and amorphous silica, the technique can be applied to the measurement of other particle types, provided they are in the size range of six nanometers (nm) to 2.5 micrometers (µm) and can be observed by Transmission Electron Microscopy (TEM)/Scanning Electron Microscopy…

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