Sympatec is member of the ISO/TC24/SC4 "Sizing methods other than sieving" and the German DIN Organisation NABau 11.42.00 "Partikelmesstechnik". Sympatec is involved in the development process of national and international standards in the field of particle sizing.

Chairmanship: Anthony Thornton (Micromeritics, US), since 15 April 2005
Secretary: BSI (GB), Dr. Francis Thomas, since March 2009

Currently the following ISO standards are existing (bolt) or in preparation (status: 15 October 2009),
the convenors of the working groups are listed in brackets:

WG Part Reference Status Title
WG1 Representation of analysis data
(Dr. Michael Stinz, TU-Dresden, D)
Part 1 ISO 9276-1:1998 90.60 Graphical representation
  ISO 9276-1:1998/Cor1:2004 60:60 Corrigendum to ISO 9276-1:1998
Part 2 ISO 9276-2:2001 90.93 Calculation of average particle sizes/diameters and moments from particle size distributions, currently in revision
Part 3 ISO 9276-3:2008 60.60

Adjustment of an Experimental Curve to a Reference Model

Part 4 ISO 9276-4:2001 90.93 Characterisation of a clasification process, no revision
Part 5 ISO 9276-5:2005 90.60 Methods of Calculations relating to Particle Size Analysis using Logarithmic Normal Probability Distribution
Part 6 ISO 9276-6:2008 60.60 The descriptive and quantitative representation of particle shape and morphology
ISO/NP 26824 10.99 Characterization of Particulate Systems - Vocabulary
WG2 Sedimentation, classification
(Prof. Dietmar Lerche, LUM GmbH, D)
Gravitational sedimentation methods
Part 1 ISO 13317-1:2001 90.92 General principles and guidllines
Part 2 ISO 13317-2:2001 90.93 Fixed pipette method
Part 3 ISO 13317-3:2001 90.93 X-ray gravitational technique
Part 4 NWI 1337-4* 10.00 Sedimentation balance system
Centrifugal sedimentation methods
Part 1 ISO 13318-1:2001 90.92 General principles and guidelines
Part 2 ISO 13318-2:2007 60.60 Photocentrifugal method, in revision
Part 3 ISO 13318-3:2004 90.60 X-ray method
Part 4 ISO/WD 13318-4* Pipette methods
WG3 Pore size distribution, porosity
(Dr. Matthias Thommes, Quantachrome, US)
Part 1 ISO15901-1: 2005 60.60 Mercury Porosimetry
ISO 15901-1:/ Cor 1:2007 60.60 Corrigendum to ISO 15901-1:2005
Part 2 ISO 15901-2:2006 60.60 Analysis of mesopores and macropores by gas adsorption
ISO 15901-2:/ Cor 1:2007 60.60 Corrigendum to ISO 15901-2:2006
Part 3 ISO 15901-3:2007 60.60 Analysis of micropores by gas adsorption, voting for FDIS
ISO/DIS9277:1995 40.99 Determination of the specific surface area of solids by gas absorption using BET
WG4 Optical measurement methods: - DISSOLVED -
WG5 ISO 13319:2007
60.60 Electrical sensing zone methods (Andrew Mark, Coulter, GB)
WG6 Laser diffraction methods
(Dr. Ronald Iacooca, US)
Part 1 ISO 13320-1:1999 90.92 General principles
ISO 13320:2009 60.60 Laser diffraction methods
WG7 Dynamic light scattering
(Prof. Robert Finsy, Vrije Universiteit Brussel, B)
ISO 13321:1996 90.92 Particle size analysis -- Photon correlation spectroscopy
(diluted supensions)
ISO 22412:2008 60.60 Dynamic light scattering
WG8 Image analysis methods
(Prof. Yoshio Otani, Kanazawa University, J)
Part 1 ISO 13322-1:2004 90.92 Static Image analysis methods
Part 2 ISO 13322-2:2006 60.60 Dynamic Image Analysis Methods
  Part 3 TR/PWI 12177 Determination of particle size and geometrical shape   from discretised images
WG9 Single particle light interaction methods
(Prof. Ichijo, Rion, J)
Part 1 ISO 13323-1:2000 95.99 Part1: Light interaction considerations
Part 1 ISO 21501-1:2009 60.60 Light scattering aerosol spectrometry
Part 2 ISO 21501-2:2007 60.60 Light scattering liquid-borne particle counter
Part 3 ISO 21501-3:2007 60.60 Light extinction liquid-borne particle counter
Part 4 ISO 21501-4:2007 60.60 Light scattering airborne particle counter for clean spaces
WG10 Small angle X-ray scattering method
(acting convenor: Dr. Alan Rawle, Malvern, US)
ISO/TS 13762:2001 90.92 Technical specification
PWI Small angle X-ray scattering method
WG11 Sampling and reference materials
(Prof. Heiskanen, Helsinki University, SF)
ISO 14487: 2000 90.93 Dispersion procedures for powders in liquid
ISO 14488 :2007 60.60 Sampling and sample splitting for the determination
of particulate properties
  PWI   Reference materials
WG12     Differential electrical mobility analysis for aerosol particles
(Gilmore Sem, TSI, US)
  ISO 15900: 2009 60.60 Differential electrical mobility analysis for aerosol particles
  WD 27891 Validation and calibration of aerosol particle number counters
WG14 Acoustic methods (Dr. David Scott, Du Pont, US)
Part 1 ISO 20998-1:2006 90.20 Ultrasonic attenuation spectroscopy
Part 2 ISO/WD 20998-2 00.20 Linear Theory
Part 3 not existing 00.20 Guidlines for non-linear theory ?
WG15 Particle characaterization by focussed beam techniques
(Dr. Hsiao, Mettler Toledo, US)
Part 1 ISO/NWI 10876-1 10.00 Back scattering techniques
WG16       Dispersion stability
(Prof. Dietmar Lerche, LUM GmbH, D)
TR     Dispersion stability in liquids
WG17       Methods for zeta potential determination
(Dr. Ren Xu, Coulter, US
Part1 PWI 13099-1 00.00  
Part 2 NWI 13099-2 00.20 Optical methods
Part 3 PWI 00.00 Ultrasonic methods
No responsibility is taken for the correctness of this information.
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ISO Standards for
Particle Sizing

Standards

The standards are available from www.beuth.de

Status

The preparation of an ISO standard is organised in stages. The status consists out of two parts, separeted by a point.

First part (xx.yy):

10

Proposal stage: 
New Work Item (NWI)

20

Preparatory stage:
Working Draft (WD)

30

Committee stage:
Committee Draft (CD)

40

Enquiry stage:
Distributed International Standard (DIS)

50

Approval stage:
Fixed Distributed International Standard (FDIS)

60

Publication stage:
International Standard (IS)

90

Review Stage

95

Withdrawal stage

Second part (xx.yy):

00

registration

20

Start of main action

60

Completion of main action

90

Decision

92

Repeat an earliar phase

93

Repeat current phase

98

Abandon

99

Proceed

For more details please refer to the ISO/IEC directives,
S
upplement - Procedures specific to ISO, page 31.