ISOTC24/SC4 Particle Sizing by methods other than Sieving
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1 ISOTC24/SC4 Particle Sizing by methods other than Sieving Kevin Powers, Secretary ISOTC24/SC4 (ANSI) Particle Engineering Research Center University of Florida Ph:
2 TC 24 Sieves, sieving and other sizing methods Secretariat: DIN Secretary: Mrs Siglinde Acker Chairperson: Mr. Walter Haver (Germany) until end 2009 TC24/SC 4 Sizing by methods other than sieving Secretariat ANSI Secretary Dr. Kevin W. Powers Chairperson Mr. Anthony Thornton (USA) Number of published standards - 29 Participating Countries (P-members) 16 Observing Countries (O-members) - 16
3 Overview of Current Nanotech Standards Program TC24/SC4 Area(s) of standardization in nanotech related areas Particle Size Analysis Surface Area and porosity measurements Representation of Data & Nomenclature Sampling and Reference Materials Dispersion (New Working Group) Program drivers (why was the program initiated?) Customers/stakeholders Instrument Manufacturers Industrial Customers (Chemical, Microelectronics, Pharmaceutical, Mining, Food, Consumer products etc.) Researchers
4 Overview of Current Nanotech Standards Program Pertinent work completed standards, technical report, guides, roadmaps, etc. 29 Published Standards (19 pertinent to nano) 8 Standards in progress (7 pertinent to nano) 8 Preliminary Work Items (6 pertinent to nano) Collaborations Committees in liaison ISO TC22,TC47, TC119, TC206, TC 146,TC229 Immediate and Medium term Plans Challenges and Obstacles
5 * * * * *applicable to nanotechnology measurements
6 * * * * * * *
7 Methods of particle sizing not currently addressed by SC4 field flow fractionation size exclusion chromatography spectroscopic or plasmon resonance techniques atomic force microscopy electron microscopy (broadly covered in image analysis) time of flight mass spectroscopy (TOF MS) Do we need documentary standards for every measurement technique?
8 Documentary Standards Needs/Gaps Prioritization challenges Nomenclature Reference Materials Guidance on Dispersion issues Fundamental knowledge issues Measurement and characterization needs Measurement of polydispersity at the nano scale Supporting reference materials Pre- and co-normative research needs Market need/demand Do people really use our standards? Technical or policy issues Sampling and dispersion Correct choice of measurement technique What degree of accuracy/precision can be expected?
9 Working Group 11 Sample Preparation and Reference Materials Convenor Kari Heiskanen, SFS (Finland) Reference Materials has long been an issue Polydisperse materials for quantity axis Documentary Standard on Reference Materials is underway in TC24/SC4 as Preliminary Work Item Philosophy of this Standard is an issue Not in the business of creating Reference Materials Standard should address the use of reference materials to establish accuracy and precision in particle size and surface area/porosity measurements
10 Working Group 16 Dispersion Characterization Resolution 167 (30 th Meeting of TC24SC4 Seoul, Korea October 2007) ISO TC24 / SC4 resolved that a Preliminary Work Item (PWI) be established with the title Dispersed Stability Characterisation in Liquids Will address the means for establishing the stability of liquid dispersions of colloids. A standard addressing the measurement of zeta potential will likely be one of the first working items Other potential topics or sub topics electrostatic stabilization steric stabilization chemically aided dispersion mechanically aided dispersion dispersion index (indices)
11 Summary Points TC24/SC4 Particle Characterization Techniques Major Current issues include Reference Materials for Particle Sizing Dispersion Dissemination of Standards
12 ISO TC24/SC4 30 th Meeting Seoul, Korea 19, 20 October 2007 Report of the Secretariat Kevin Powers/Vanessa Kuder, Secretary Tony Thornton, Chairman
13 ISO TC24/SC4 Status 30 th Meeting 19, 20 October/ Seoul, Korea 17 Active Documents, 2 NPs, 9 documents advanced*, 5 new standards (since last meeting) PWI NP CD DIS FDIS ISO (WG 2) *9277 (WG 3) C (WG 9) W (WG 1) *22412 (WG 7) * TC (WG 2) (WG 2) (WG 15) W (WG 1) (Vote) (WG 11) *13319 (WG 5) (WG 10) (WG 14) (WG 14) (WG 2) (WG 1) *13320 (Vote) (WG 6) *15900 W (Vote) (WG 12) * (WG 9) * (WG 9) * (WG 9) (WG 12)
14 Resolutions from 29 th Meeting 30, 31 March 2007, Nuremberg, Germany Resolution 148. ISO TC 24/SC4 resolved that ISO DIS Representation of results of particle size analysis - Part 6: Description and quantitative representation of particle shape and morphology be forwarded to the Central Secretariat, Geneva for recommendation and circulation as a final draft international standard (FDIS). Resolution 149. ISO TC 24/SC4 resolved that a new work item (NWI) be established with the title ISO Determination of particle size distribution by gravitational liquid sedimentation methods Part 4: Balance method in Work Group 2. Resolution 150. ISO TC 24/SC4 resolved that ISO WD 9277 Determination of the specific surface area of solids by gas adsorption using the BET method and alternative methods be registered with the Central Secretariat, Geneva as a committee draft. Resolution 151. ISO TC 24/SC4 resolved that ISO CD Particle size analysis Laser diffraction methods be forwarded to the Central Secretariat, Geneva for circulation as a draft international standard (DIS). Resolution 152. ISO TC 24/SC4 resolved that ISO DIS Particle size analysis Dynamic light scattering be forwarded to the Central Secretariat, Geneva for recommendation and circulation as a final draft international standard (FDIS)
15 Resolutions from 29 th Meeting 30, 31 March 2007, Nuremberg, Germany (continued) Resolution 153. ISO TC 24/SC4 resolved that ISO CD Determination of particle size distribution Single particle light interaction methods Part 1: Light scattering aerosol spectrometer be forwarded to the Central Secretariat, Geneva for circulation as a draft international standard (DIS) Resolution 154. ISO TC 24/SC4 resolved that ISO CD Determination of particle size distribution Differential electrical mobility analysis for aerosol particle be forwarded to the Central Secretariat, Geneva for circulation as a draft international standard (DIS) Resolution 155. ISO TC 24/SC4 resolved that a new work item (NWI) be registered with the title Particle size characterisation by focussed beam methods Part 1: Back scattering techniques and the associated draft registered with the Central Secretariat, Geneva as a committee draft. Resolution 156. ISO TC 24/SC4 request that the title of ISO TC 24 Sieves, sieving and sizing methods be changed to Particle characterisation including sieving. Resolution 157. ISO TC 24/SC4 request that the title of SC4 Sieving by methods other than sieving be changed to Particle characterisation.
16 ISO/TC24/SC4 Sizing by methods other than sieving Secretariat ISO/TC24/SC4: ANSI Contact: Kevin Powers ISO/TC24/SC4 N469 Resolutions from the 30 th meeting of ISO TC24 / SC4 held on and at Seoul Plaza Hotel, Seoul, South Korea Resolution 158 ISO TC24 / SC4 resolved that ISO :2001 Determination of particle size distribution by gravitational liquid sedimentation methods -- Part 1: General principles and guidelines be revised and that a New Work Item (NWI) be established within WG2. Resolution 159 ISO TC24 / SC4 resolved that ISO CD 9277 Determination of the specific surface area of solids by gas adsorption using the BET method and alternate methods?? be forwarded to the central secretariat for circulation as a Draft International Standard (DIS). Resolution 160 ISO TC24 / SC4 resolved that a New Work Item (NWI) be established within WG 3 with the title, Measurement of water sorption and other vapours in solids. Resolution 161 ISO TC24 / SC4 resolved that a Preliminary Work Item (PWI) be established within WG 3 with the title, Determination of density by volumetric displacement Part 1 General concepts Part 2 Skeleton density by gas displacement techniques.
17 Resolutions from the 30 th meeting of ISO TC24 / SC4 held on and at Seoul Plaza Hotel, Seoul, South Korea Resolution 162 ISO TC24 / SC4 resolved that Dr. Andrew Mark be made convenor of WG5, engendered by the retirement of Billy Goranson who was unanimously thanked for his??? years of sterling contribution. Resolution 163 ISO TC24 / SC4 resolved that a Preliminary Work Item (PWI) be established within WG 8 with the title Particle size analysis Image analysis method, Determination of particle size and shape from discretised images. Resolution 164 ISO TC24 / SC4 resolved that ISO :2004 Particle size analysis -- Image analysis methods -- Part 1: Static image analysis methods be revised and that a Preliminary Work Item (PWI) be established within WG 8. Resolution 165 ISO TC 24 / SC4 resolved that ISO CD Determination of particle size distribution -- Single particle light interaction methods -- Part 1: Light scattering aerosol spectrometer be forwarded to the Central Secretariat for circulation as a Draft International Standard (DIS). Resolution 166 ISO TC 24 / SC4 resolved that a New Work Item (NWI) be established within WG 10 with the title Particle Size Analysis Small angle X-ray scattering method and that ISO/TS 13726:2001 Particle size analysis -- Small angle X-ray scattering method be circulated in support. Resolution 167 ISO TC24 / SC4 resolved that a Preliminary Work Item (PWI) be established within WG 16 (Possibly WG4) with the title Dispersed Stability Characterisation in Liquids
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20 TC 24 Sieves, sieving and other sizing methods Secretariat: DIN Secretary: Mrs Siglinde Acker Chair: Mr. Walter Haver (Germany) until end 2009 Work programme (drafts and new work items under the direct responsibility of TC 24) Business plan Working area on ISOTC Scope: Standardization pertaining to equipment and methods used in size classification of particulate material in solid or liquid state. Total number of published ISO standards related to the TC and its SCs: 47 Number of published ISO standards under the direct responsibility of TC 24: 3 Participating countries: 13 Observing countries: 32 ISO committees in liaison: ISO TC 27, TC 29, TC 33, TC 74, TC 82, TC 93, TC 102, TC 119, TC 134, TC 229
21 TC 22 Road vehicles Secretariat: AFNOR Secretary: Mme Michèle Maitre Chair: M. Jean-Pierre Cheynet (France) until end 2009 Scope: All questions of standardization concerning compatibility, interchangeability and safety, with particular reference to terminology and test procedures (including the characteristics of instrumentation) for evaluating the performance of the following types of road vehicles and their equipment as defined in the relevant items of Article 1 of the convention on Road Traffic, Vienna in 1968 concluded under the auspices of the United Nations: mopeds (item m); motor cycles (item n); motor vehicles (item p); trailers (item q); semi-trailers (item r); light trailers (item s); combination vehicles (item t); articulated vehicles (item u). Total number of published ISO standards related to the TC and its SCs 670 : Number of published ISO standards under the direct responsibility of TC 22: 39 Participating countries: 26 Observing countries: 41
22 TC 146 Air quality Secretariat: DIN Secretary: Mr Rolf Kordecki Chair: Mr. Ente J. Sneek (Netherlands) until end 2007 Scope: Standardization of tools for air quality characterisation of emissions, workspace air, ambient air, indoor air, in particular measurement methods for air pollutants (particles, gases, odours, micro-organisms) and for meteorological parameters, measurement planning, procedures for Quality Assurance/Quality Control (QA/QC) and methods for the evaluation of results including the determination of uncertainty. Excluded : the establishment of limit values for air pollutants; the air quality in clean rooms; radioactive substances. Total number of published ISO standards related to the TC and its SCs: 94 Participating countries: 27 Observing countries: 46
23 TC 229 Nanotechnologies Secretariat: BSI Secretary: Mr. Jose Alcorta Chair: Dr. Peter Hatto (United Kingdom) Scope: Standardization in the field of nanotechnologies that includes either or both of the following: 1. Understanding and control of matter and processes at the nanoscale, typically, but not exclusively, below 100 nonametres in one or more dimensions where the onset of sizedependent phenomena usually enables novel applications, 2. Utilizing the properties of nanoscale materials that differ from the properties of individual atoms, molecules, and bulk matter, to create improved materials, devices, and systems that exploit these new properties. Specific tasks include developing standards for: terminology and nomenclature; metrology and instrumentation, including specifications for reference materials; test methodologies; modelling and simulations; and science-based health, safety, and environmental practices. Total number of published ISO standards related to the TC and its SCs: 0 Participating countries: 29 Observing countries: 10 ISO committees in liaison: ISO TC 24/SC 4, TC 48, TC 61, TC 146/SC 2, TC 150, TC 184/SC 4, TC 194, TC 201, TC 202, TC 206, TC 207, TC 209, TC 213, TC 215
24 TC24/SC 4 ISO Submission Interface
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