Archives

May 26, 2022

ISO Publishes Standard on Characterization of CNT and CNF Aerosols for Inhalation Toxicity Tests

The International Organization for Standardization (ISO) recently published ISO/TR 23463:2022, “Nanotechnologies — Characterization of carbon nanotube and carbon nanofibre aerosols to be used in inhalation toxicity tests.” The standard reviews characterization of carbon nanotube (CNT) and carbon nanofiber (CNF) aerosols for inhalation exposure studies. According to the standard, the framework for material characterization for inhalation studies consists of: The standard focuses on the...
January 18, 2022

ISO Publishes Standard for Determining the Mean Size of Nano-Objects in Liquid Dispersions by SMLS

The International Organization for Standardization (ISO) recently published ISO/TS 21357:2022, “Nanotechnologies — Evaluation of the mean size of nano-objects in liquid dispersions by static multiple light scattering (SMLS).” ISO states that the standard provides guidance and requirements for the determination of the mean (spherical) equivalent diameter of nano-objects (i.e., particles, droplets, or bubbles) dispersed in liquids using the SMLS technique. According to ISO, the technique is...
December 6, 2021

ISO TC 229 Begins Survey on Advanced and Emergent Materials

The American National Standards Institute (ANSI), which administers the U.S. Technical Advisory Group for the International Organization for Standardization (ISO) Technical Committee (TC) 229 on Nanotechnologies, announced a survey seeking feedback on the use of terms related to advanced materials as part of its newly launched study group, Advanced and Emerging Materials. According to ANSI, the study group is charged with identifying and clarifying differences between the use of terms...
November 17, 2021

ISO Publishes Standard on Evaluating the Antimicrobial Performance of Textiles Containing Manufactured Nanomaterials

The International Organization for Standardization (ISO) recently published ISO/TS 23650:2021, “Nanotechnologies — Evaluation of the antimicrobial performance of textiles containing manufactured nanomaterials.” ISO states that the standard specifies the antimicrobial performance assessment method for textiles containing manufactured (metals/metal oxides) nanomaterials. The textiles in the standard include fabric, yarn, and fiber in which manufactured nanomaterials are used during the...
August 11, 2021

ISO Publishes Two New Standards for Nanomaterials

The International Organization for Standardization (ISO) recently published two standards for nanomaterials. ISO/TS 21633:2021, “Label-free impedance technology to assess the toxicity of nanomaterials in vitro,” describes a methodology of a label-free and real-time detection for non-invasive monitoring of cell-based assays to assess toxicity of nanomaterials to eukaryotic and prokaryotic cells. ISO/TS 23034:2021, “Nanotechnologies — Method to estimate cellular uptake of carbon...
July 19, 2021

ISO Publishes Standard Evaluating Methods for Assessing the Release of Nanomaterials from Commercial, Nanomaterial-Containing Polymer Composites

The International Organization for Standardization (ISO) has published ISO/TR 22293:2021, “Evaluation of methods for assessing the release of nanomaterials from commercial, nanomaterial-containing polymer composites.” ISO states that an understanding of what is released from products containing manufactured nanomaterials “is critical to planning and managing safe development and use of those products.” The document aims to provide a guide to the information to be taken into account in...
June 22, 2021

ISO Publishes Nanotechnologies Standard for 3D Image Reconstruction of Rod-Supported Nano-Objects Using Transmission Electron Microscopy

The International Organization for Standardization (ISO) has published standard ISO/TS 22292:2021, “Nanotechnologies — 3D image reconstruction of rod-supported nano-objects using transmission electron microscopy.” ISO states that the standard provides guidance for sample preparation, data acquisition by transmission electron microscopy (TEM), data processing, and three-dimensional (3D) image reconstruction to measure size and shape parameters of nano-objects on rod-shaped supports....
June 6, 2021

ISO Guidance Specifies Characteristics and Measurement Methods for Antibacterial Silver Nanoparticles

The International Organization for Standardization (ISO) has published standard ISO/TS 20660:2019, “Nanotechnologies — Antibacterial silver nanoparticles — Specification of characteristics and measurement methods.”  The standard provides guidance for the specification of characteristics and relevant measurement methods for silver nanoparticles in powder or colloidal forms that are intended for antibacterial applications in nanotechnology.  ISO states that the standard is...
April 5, 2021

ISO Updates Series of Standards for Nanotechnology

The International Organization for Standardization (ISO) published a news item on April 1, 2021, entitled “The Science of Tiny Little Things.”  According to the item, ISO has recently made some revisions and updates to its comprehensive 13-part series of International Standards for nanotechnology.  Updated standards include ISO/TS 80004-3, Nanotechnologies – Vocabulary – Part 3:  Carbon nano-objects, which defines terms and concepts for carbon...