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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...

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...

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...

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...

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...

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...

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....

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...

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...

The International Organization for Standardization (ISO) has published two nanotechnology standards:...

On June 25, 2020, the National Institute for Occupational Safety and Health (NIOSH) published a Nanotechnology Research Center (NTRC) Program Performance One-Pager (PPOP).  NTRC conducts research to understand the potential effects on human health of exposure to engineered nanomaterials (ENM) and develops methods to control or eliminate exposures.  According to the PPOP, NTRC’s accomplishments include conducting a survey to gather information about companies’ safety and...

The International Organization for Standardization (ISO) has published standard ISO/TS 21412:2020, “Nanotechnologies — Nano-object-assembled layers for electrochemical bio-sensing applications — Specification of characteristics and measurement methods.”  The standard specifies the characteristics to be measured of nano-object-assembled layers on electrodes by means of a solution process and of nano-objects constituting the layers for electrochemical applications such as...

The International Organization for Standardization (ISO) has published standard ISO/TS 11308:2020, “Nanotechnologies — Characterization of carbon nanotube samples using thermogravimetric analysis.” The standard provides guidelines for the characterization of carbon nanotube (CNT)-containing samples by thermogravimetric analysis (TGA), performed in either an inert or oxidizing environment. The standard offers guidance on the purity assessment of the CNT samples through a quantitative...

The International Organization for Standardization (ISO) has published standard ISO/TS 21237:2020, “Nanotechnologies — Air filter media containing polymeric nanofibres — Specification of characteristics and measurement methods.”  According to ISO, in recent years, air filter media containing nanofibers have been commercialized and widely used by different industries due to their high filtration efficiency, along with a low pressure drop created by the slip flow effect.  ISO...

The International Organization for Standardization (ISO) has published standard ISO/TS 19808:2020, “Nanotechnologies — Carbon nanotube suspensions — Specification of characteristics and measurement methods.”  The standard specifies the characteristics to be measured of suspensions containing multi-walled carbon nanotubes (carbon nanotube suspensions).  The standard includes the essential and additional characteristics of the carbon nanotube suspension, and the corresponding...

The International Organization for Standardization (ISO) has published standard ISO 20814:2019, “Nanotechnologies — Testing the photocatalytic activity of nanoparticles for NADH oxidation.”  The standard specifies a method for the measurement of the photocatalytic activity (PCA) of nanoparticles (NP), suspended in an aqueous environment in physiologically relevant conditions, by measuring the ultraviolet (UV)-induced nicotine adenine dinucleotide hydrate (NADH) oxidation. ...

The International Organization for Standardization (ISO) has published standard ISO/TS 21236-1:2019, “Nanotechnologies — Clay nanomaterials — Part 1:  Specification of characteristics and measurement methods for layered clay nanomaterials.”  The standard specifies characteristics to be measured of layered clay nanomaterials in powder form and chemically modified ones and describes their relevant measurement methods.  According to the standard abstract, there are...

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...

The International Organization for Standardization (ISO) has published standard ISO/TR 19733:2019, “Nanotechnologies — Matrix of properties and measurement techniques for graphene and related two-dimensional (2D) materials.”  ISO states that since graphene was discovered in 2004, it has become one of the most attractive materials in application research and device industry due to its supreme material properties such as mechanical strength, stiffness and elasticity, high electrical and...

The International Organization for Standardization (ISO) has published standard ISO/TR 21386, “Nanotechnologies — Considerations for the measurement of nano-objects and their aggregates and agglomerates (NOAA) in environmental matrices.”  The standard provides some considerations for the collection of environmental samples to be analyzed for manufactured NOAA, considerations to distinguish manufactured NOAA from background levels of naturally occurring nanoscale particles of the same...

In December 2018, the International Standardization Organization (ISO) published standard SO/TS 16195:2018, “Nanotechnologies — Specification for developing representative test materials consisting of nano-objects in dry powder form.”  The standard specifies development of representative test materials consisting of nano-objects in dry powder form to enable test method development and improve comparability of data for nanotechnology applications.  The standard specifies that for...

On December 7, 2018, the Occupational Cancer Research Center (OCRC) held a seminar on “Perspectives on Mitigating Exposures to Engineered Nanomaterials in the Workplace.”  The seminar was part of the Occupational and Environmental Health seminar series supported by the Dalla Lana School of Public Health, Public Health Ontario, OCRC, and the Center for Research Expertise in Occupational Disease.  Pat Rasmussen, Health Canada/University of Ottawa, gave the presentation, addressing:...

In June 2018, the International Standardization Organization (ISO) published standard ISO/TS 21362:2018, “Nanotechnologies — Analysis of nano-objects using asymmetrical-flow and centrifugal field-flow fractionation.”  The document identifies parameters and conditions, as part of an integrated measurement system, necessary to develop and validate methods for the application of asymmetrical-flow and centrifugal field-flow fractionation to the analysis of nano-objects and their...

In April 2018, the International Standardization Organization (ISO) published standard ISO 19007:2018, “Nanotechnologies — In vitro MTS assay for measuring the cytotoxic effect of nanoparticles.”  The standard specifies a method for evaluating the effects of nano-objects and their aggregates and agglomerates on cellular viability using the MTS assay.  The assay design includes performance requirements and control experiments to identify and manage variability in the...

The Organization for Economic Cooperation and Development (OECD) has published a March 23, 2018, report entitled Evaluation of in vitro methods for human hazard assessment applied in the OECD Testing Programme for the Safety of Manufactured Nanomaterials.  The Testing Program for the Testing of Manufactured Nanomaterials tested 11 manufactured nanomaterials to generate information, including their physico-chemical properties, environmental fate, and environmental and mammalian...

In November 2017, the International Organization for Standardization (ISO) published standard ISO/TS 20787:2017, “Nanotechnologies — Aquatic toxicity assessment of manufactured nanomaterials in saltwater lakes using Artemia sp. Nauplii.”  ISO/TS 20787:2017 specifies a test method, aiming to maximize repeatability and reliability of testing, to determine whether manufactured nanomaterials are toxic to aquatic organisms, specifically Artemia sp. nauplius.  ISO states that ISO/TS...

In October 2017, the International Organization for Standardization (ISO) published standard ISO/TR 19057:2017, “Nanotechnologies — Use and application of acellular in vitro tests and methodologies to assess nanomaterial biodurability.”  The standard reviews the use and application of acellular in vitro tests and methodologies implemented in the assessment of the biodurability of nanomaterials and their ligands in simulated biological and environmental media.  It is intended to focus...

The International Organization for Standardization (ISO) has published standard ISO/TS 80004-13:2017, “Nanotechnologies — Vocabulary — Part 13:  Graphene and related two-dimensional (2D) materials.”  According to ISO, over the last decade, interest has arisen in graphene due to its “many exceptional properties.”  More recently, other materials with a similar structure have also shown promising properties, including monolayer and few-layer versions of hexagonal boron nitride,...

The International Organization for Standardization (ISO) has published standard ISO/TS 20477:2017, “Nanotechnologies — Standard terms and their definition for cellulose nanomaterial.”  The standard states that in industrial productions, cellulose nanomaterials can be manufactured by conversion of wood pulp through chemical, biological, or mechanical processes.  Due to their renewable nature and unique properties, cellulose nanomaterials have developed into platform materials that have...

The International Organization for Standardization (ISO) recently published standard ISO/TR 19601:2017, “Nanotechnologies — Aerosol generation for air exposure studies of nano-objects and their aggregates and agglomerates (NOAA).”  ISO states that, to evaluate the inhalation toxicity of NOAA, it is important to consider certain parameters that make the toxicity testing relevant to human exposure.  Three critical aspects to consider when designing and conducting an inhalation...

The International Organization for Standardization (ISO) published standard ISO/TR 18401:2017, “Nanotechnologies — Plain language explanation of selected terms from the ISO/IEC 80004 series.”  The standard is intended to assist stakeholders who are making decisions about the direction, management, and application of nanotechnologies to understand better selected key terms and definitions in the ISO/IEC 80004 vocabulary series for nanotechnologies.  The standard offers...

The International Organization for Standardization (ISO) recently announced publication of standard ISO/TS 18827:2017, “Nanotechnologies — Electron spin resonance (ESR) as a method for measuring reactive oxygen species (ROS) generated by metal oxide nanomaterials.”  The introduction states that the use of metal or metal oxide-based nanomaterials has dramatically increased in biomedical and industrial applications.  The scientific basis for the cytotoxicity and genotoxicity of most...

On March 19, 2017, the International Organization for Standardization (ISO) published the sixth edition of its specifications for marine fuels (ISO 8217:2017), which includes a redefined “class F” grade for biofuel blends in marine distillates.  Up to seven percent fatty acid methyl ester (FAME), which has similar physical properties to conventional diesel, is permitted in the new “F” grades, specifically DFA, DFZ, and DFB.  Additionally, the DMA specifications...

In January 2017, the International Organization for Standardization (ISO) published International Electrotechnical Commission (IEC)/Technical Specification (TS) 80004-9:2017, “Nanotechnologies — Vocabulary — Part 9:  Nano-enabled electrotechnical products and systems.”  IEC/TS 80004-9:2017 specifies terms and definitions for electrotechnical products and systems reliant on nanomaterials for their essential functionalities.  ISO states that it is intended to facilitate...

The International Organization for Standardization (ISO) recently published ISO/TR 18196:2016, “Nanotechnologies — Measurement technique matrix for the characterization of nano-objects.”  The document provides a matrix intended to guide users to commercially available techniques relevant to the measurements of common physiochemical parameters for nano-objects.  Some techniques are also applicable to nanostructured materials.  As scientific advances are made and additional...

On November 21, 2016, the International Organization for Standardization (ISO) released ISO/TR 18637:2016, “Nanotechnologies — Overview of available frameworks for the development of occupational exposure limits and bands for nano-objects and their aggregates and agglomerates (NOAAs).”  ISO notes that occupational exposure limits (OEL) are generally substance-specific.  In some case, there is insufficient data to develop an OEL, especially for substances such as nano-objects and...

The International Organization for Standardization (ISO) published ISO/TR 16196:2016, “Nanotechnologies — Compilation and description of sample preparation and dosing methods for engineered and manufactured nanomaterials.”  The goal of the standard is to assist scientists and experts to understand, plan, choose, and address issues relevant to nanomaterials before and during toxicological testing.  The descriptions of sample preparation method factors for both in vitro and in...

The International Organization for Standardization (ISO) Technical Committee (TC) 229 on nanotechnologies is preparing guidance on the format and content of voluntary labeling for manufactured nano-objects (MNO) and products, preparations, and mixtures containing MNOs. According to ISO, the guidance, ISO/TS 13830:2011, would also address the use of the term “nano” in product labeling. The European Committee for Standardization (CEN) was initially developing the guidance and,...

The International Organization for Standardization (ISO) has published a Technical Report (TR) providing guidance on the physicochemical characterization of manufactured nano-objects prior to toxicological assessment.  ISO states that TR 13014:2012, Nanotechnologies — Guidance on physicochemical characterization of engineered nanoscale materials for toxicologic assessment, “is intended to assist health scientists and experts to understand, plan, identify, and address relevant...

On May 26, 2011, the Organization for Economic Cooperation and Development (OECD) posted a document entitled “Current Developments/Activities on the Safety of Manufactured Nanomaterials,” which provides information on the outcomes and developments of the OECD Working Party on Manufactured Nanomaterials (WPMN) related to the safety of manufactured nanomaterials. OECD states that the document “provides a snapshot of information on current/planned activities related to the safety of...

The International Organization for Standardization (ISO) has published a new standard, ISO/TR 13121:2011, which describes a process for identifying, evaluating, addressing, making decisions about, and communicating the potential risks of developing and using manufactured nanomaterials to protect the health and safety of the public, consumers, workers, and the environment.  According to ISO, the standard offers guidance on the information needed to make sound risk evaluations and risk...

On January 26, 2011, the International Organization for Standardization (ISO) announced the availability of a new standard, ISO 10808:2010, entitled “Nanotechnologies — Characterization of nanoparticles in inhalation exposure chambers for inhalation toxicity testing.” The standard is intended to ensure that the results of inhalation toxicity tests of airborne nanoparticles are reliable and harmonized worldwide. According to ISO, the standard “establishes a battery of inhalation...

In a September 22, 2010, report entitled Current Developments/Activities on the Safety of Manufactured Nanomaterials, the Organization for Economic Cooperation and Development (OECD) provides information on current and planned activities related to the safety of manufactured nanomaterials in OECD member and non-member countries that attended the seventh meeting of OECD’s Working Party on Manufactured Nanomaterials (WPMN) on July 7-9, 2010, in Paris, France.  The document also includes...

On July 9, 2010, the American National Standards Institute (ANSI) will host a webinar to discuss draft international guidance on the labeling of manufactured nano-objects and products containing manufactured nano-objects. The European Committee for Standardization (CEN) Technical Committee (TC) 352 Nanotechnologies and the International Organization for Standardization (ISO) TC 229 Nanotechnologies are jointly developing a Technical Specification entitled “Guidance on the labeling of...

During the June 29-July 1, 2009, meeting of the United Nations (UN) Committee of Experts on the Transport of Dangerous Goods and on the Globally Harmonized System of Classification and Labeling of Substances (GHS), the Committee will discuss a paper entitled “Ongoing Work on the Safety of Nanomaterials.” The paper provides a summary of current activities by the European Union (EU), including the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) program,...

On September 25, 2008, the International Organization for Standardization (ISO) announced the availability of ISO/TS 27687:2008, Nanotechnologies — Terminology and Definitions for Nano-Objects — Nanoparticle, Nanofibre and Nanoplate, which provides terms and definitions related to particles in the field of nanotechnologies. ISO states that it is “intended to facilitate communications between organizations and individuals in industry and those who interact with them.” The document is...

On June 17, 2008, the European Commission (EC) issued a press release entitled “Commission starts public dialogue on nanotechnologies — tapping economic and environmental potential through safe products.” According to the EC, while current European Union (EU) legislation “covers in principle” the environment, health, and safety issues concerning nanomaterials, “there is further need for research and international cooperation.” EC will begin a consultation with...

On December 19, 2007, the National Institute for Occupational Safety and Health (NIOSH) published an update entitled “NIOSH Informs, Leads Nanotechnology Actions by International Partner Organizations.” In the Update, NIOSH summarizes its recent contributions to international research:...

On December 19, 2007, the Department for Environment, Food and Rural Affairs (DEFRA) published a report entitled Characterising the Potential Risks Posed by Engineered Nanoparticles: A Second UK Government Research Report, which follows up on DEFRA’s 2005 report and 2006 progress report. The report reviews the status of research pertaining to the environmental, health, and safety (EHS) issues relating to engineered nanoparticles, and places the United Kingdom’s (UK) research...

On January 22, 2007, ISO published a report entitled Workplace Atmospheres — Ultrafine, Nanoparticle and Nano-Structured Aerosols — Inhalation Exposure Characterization and Assessment, which includes information on the potential health effects of nanoaerosols, sources of occupational nanoaerosols, exposure assessment strategies, particle ensemble characterization methods, size-resolved characterization, online chemical analysis, single particle analysis, and electron microscopy sample...