International Standard Developed
under U.S. Leadership in ISO TC 229 WG 3
The U.S. Food and Drug Administration (FDA) recently adopted three nanotechnology standards as part of a major update to the administration’s List of Recognized Standards. The documents comprise a Technical Specification (TS) developed by the International Organization for Standardization (ISO) Technical Committee (TC) 229 on Nanotechnologies,and two standards developed by ASTM International (ASTM), a member of the American National Standards Institute (ANSI) and audited designator. ASTM is one of six ANSI-accredited standards developers to achieve audited designator status in recognition of the organization's consistent record of successful voluntary standards development.
ISO/TS 14101, Surface characterization of gold nanoparticles for nanomaterial specific toxicity screening: FT-IR method, adopted by the FDA in January 2015, was developed by ISO TC 229, WG 3, Health, safety, and environment, under U.S. leadership. At the time of the document’s publication, Dr. Laurie Locascio of the National Institute of Standards and Technology (NIST) served as the WG 3 Convenor, and Dr. Nam Woong Song of Korea served as the project leader. The U.S.’s Dr. Vladimir Murashov of the National Institute for Occupational Safety and Health (NIOSH) currently serves as WG 3 Convenor.
One of ISO’s most active committees, ISO/TC 229 focuses on the development of nanotechnology standards, including those for terminology and nomenclature; metrology, and instrumentation, test methodologies; modeling and simulations; and science-based health, safety, and environmental practices. To ensure the U.S. is strongly represented throughout TC 229’s areas of activity, the ANSI-accredited U.S. Technical Advisory Group (TAG) to ISO TC 229, administered by ANSI , formulates and delivers U.S. positions and proposals to ISO in all areas of nanotechnology. Mirroring ISO TC 229’s four-WG structure, the U.S. TAG is made up of U.S. private- and public-sector experts in nanotechnology who serve as delegates for ISO TC 229 meetings, with Steve Brown of Intel Global Environmental Health and Safety serving as overall TAG Chair.
The FDA advises referring to the relevant documents for points to consider when assessing whether an FDA-regulated product involves the application of nanotechnology. Among the various properties of gold nanoparticles (Au NPs), surface ligand characteristics are found to play an important role in determining the behavior of Au NPs, including the aggregation/agglomeration properties of Au NPs in solution, protein binding of these particles to surfaces in cell culture media, and toxicity of Au NPs to living cells.
The FDA’s other adopted standards, ASTM E2490, Standard Guide for Measurement of Particle Size Distribution of Nanomaterials in Suspension by Photon Correlation Spectroscopy (PCS), and ASTM E2535, Standard Guide for Handling Unbound Engineered Nanoscale Particles in Occupational Settings, were developed by ASTM’s Committee E56 on Nanotechnology.
More detailed information on all three documents referenced can be found in the ANSI-NSP Nanotechnology Standards Database at Nanostandards.ansi.org. For more information regarding either the ANSI-NSP or ANSI-Accredited U.S. TAG to ISO/TC 229, contact Ms. Heather Benko (senior manager, nanotechnology standardization activities, firstname.lastname@example.org).
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