SIST EN ISO 1624:2002

• Status: Published
• Publication Date: 31-Aug-2002
• ICS: 83.080.20 - Thermoplastic materials
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Sep-2002
• Due Date: 01-Sep-2002
• Completion Date: 01-Sep-2002
• Ref Project: EN ISO 1624:2001 - Plastics - Vinyl choride homopolymer and copolymer resins - Sieve analysis in water (ISO 1624:2001)

• Replaces: SIST EN ISO 1624:2000/AC:1999 - Plastics - Vinyl chloride homopolymer and copolymer resins - Sieve analysis in water (ISO 1624:1978)
• Effective Date: 22-Dec-2008
• Replaces: SIST EN ISO 1624:2000 - Plastics - Vinyl chloride homopolymer and copolymer resins - Sieve analysis in water (ISO 1624:1978)
• Effective Date: 01-Sep-2002
• Refers: SIST ISO 565:2003 - Test sieves -- Metal wire cloth, perforated metal plate and electroformed sheet -- Nominal sizes of openings
• Effective Date: 25-Aug-2026
• Refers: SIST EN 12503-2:2002 - Sports mats - Part 2: Pole vault and high jump mats, safety requirements
• Effective Date: 28-Jan-2026

SIST EN ISO 1624:2002 is the SIST adoption of EN ISO 1624:2001 and ISO 1624:2001 for sieve analysis in water of vinyl chloride homopolymer and copolymer resins. It specifies a laboratory method for measuring sieve retention, so producers and test labs can check resin particle-size behavior for supply control and predictable processing.

What does SIST EN ISO 1624:2002 specify?

SIST EN ISO 1624:2002 covers a wet sieving method for vinyl chloride homopolymer and copolymer resins and is organized into clauses on scope, one normative reference, one defined term, principle, reagent, apparatus, procedure, expression of results, precision, and test report.

The scope ties the method to the determination of sieve retention. In practice, that means the standard is used to quantify how much resin remains on specified sieves after washing in water, rather than using a dry sieving method.

What are the key requirements of SIST EN ISO 1624:2002?

SIST EN ISO 1624:2002 requires the test portion to be sieved under a stream of water with standard-aperture sieves from ISO 565. The wet method is important because it reduces interference from static electricity, and the standard notes that it is particularly suitable for emulsion resins.

Test materials and apparatus

The method uses a wetting agent, such as a sodium alkylsulfonate solution, to help disperse the resin before sieving. The apparatus includes sieves with nominal openings of 0.063 mm and 0.250 mm, a balance accurate to 0.01 g, an oven at 110 °C ± 2 °C, a water filter, a sprinkling device, and a filter funnel or crucible. For users, this means the laboratory setup must be able to control wash water, drying, and weighing consistently.

Procedure and replicate testing

The procedure allows either two superimposed sieves in one run or two separate runs with one sieve each. The resin is prepared as a suspension, washed until the drain-off liquid is free from particles, and any particles that remain on the underside of a sieve are rinsed to the next lower sieve. Each determination is carried out in duplicate, and the two results must agree within the limits stated in the standard before they are accepted.

Drying, weighing, and reporting

Residues may be dried either on a filter bed or directly on the sieve, but the standard gives the filter funnel or crucible route as the recommended method. The dried residue is weighed to the nearest 0.1 g, and the retained fractions are reported for the 0.250 mm and 0.063 mm sieves. For users, this defines both the measurement points and the way the final sieve-retention results are expressed.

Precision and result quality

The standard includes precision data from interlaboratory trials and gives repeatability and reproducibility values that depend on sieve mesh size. This helps laboratories judge whether their own results are in line with expected interlaboratory variation.

What terms does SIST EN ISO 1624:2002 define?

• Sieve retention - the mass percentage of resin remaining on the sieve after the test.
• Test portion - the measured resin portion taken for a single determination.
• Wetting agent - an additive used to help the resin disperse in water before sieving.
• Standard-aperture sieve - a sieve with openings conforming to ISO 565.
• Repeatability, s_r - the within-laboratory precision indicator given in the precision clause.
• Reproducibility, s_R - the between-laboratory precision indicator given in the precision clause.

Who uses SIST EN ISO 1624:2002?

SIST EN ISO 1624:2002 is used by plastics manufacturers, quality-control laboratories, and testing organizations working with vinyl chloride homopolymer and copolymer resins. It is relevant to process control, incoming inspection, and product consistency checks where sieve retention affects handling and processing behavior.

What changed in SIST EN ISO 1624:2002 from the previous edition?

SIST EN ISO 1624:2002 is the second edition of ISO 1624 and cancels and replaces ISO 1624:1978. Compared with the first edition, it raises the drying temperature from 80 °C to 110 °C and adds a precision statement based on current test data. EN ISO 1624:2001 supersedes EN ISO 1624:1997.

Which standards are used with SIST EN ISO 1624:2002?

• ISO 565 - provides the sieve specification used for the test sieves, including nominal opening sizes and the series for selecting additional sieves if needed.

What does the SIST EN ISO 1624:2002 document contain?

SIST EN ISO 1624:2002 contains a figure of a multiple-sieve spraying device, which shows one practical way to meet the apparatus requirements. It also includes a precision table based on interlaboratory trials for different mesh sizes. The procedure clause gives the step-by-step washing, drying, and weighing method, while the results clause explains how to calculate and round the retained fractions. The test report clause lists the information that should be recorded for traceability, including the resin identification, sample mass, retained percentages, and test date.

SLOVENSKI STANDARD
01-september-2002
1DGRPHãþD
SIST EN ISO 1624:2000
SIST EN ISO 1624:2000/AC:1999
Polimerni materiali - Homo- in kopolimeri vinilklorida - Sejalna analiza v vodi (ISO
1624:2001)
Plastics - Vinyl choride homopolymer and copolymer resins - Sieve analysis in water
(ISO 1624:2001)
Kunststoffe - Vinylchlorid-Homo- und Copolymerisate - Siebanalyse im Wasser (ISO
1624:2001)
Plastiques - Résines d'homopolymeres et de copolymeres de chlorure de vinyle -
Analyse granulométrique par tamisage sous courant d'eau (ISO 1624:2001)
Ta slovenski standard je istoveten z: EN ISO 1624:2001
ICS:
83.080.20 Plastomeri Thermoplastic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 1624
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2001
ICS 83.080.20 Supersedes EN ISO 1624:1997
English version
Plastics - Vinyl choride homopolymer and copolymer resins -
Sieve analysis in water (ISO 1624:2001)
Plastiques - Résines d'homopolymères et de copolymères Kunststoffe - Vinylchlorid-Homo- und Copolymerisate -
de chlorure de vinyle - Analyse granulométrique par Siebanalyse im Wasser (ISO 1624:2001)
tamisage sous courant d'eau (ISO 1624:2001)
This European Standard was approved by CEN on 15 December 2001.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2001 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1624:2001 E
worldwide for CEN national Members.

CORRECTED  2002-09-25
Foreword
This document (ISO 1624:2001) has been prepared by Technical Committee ISO/TC 61
"Plastics" in collaboration with Technical Committee CEN/TC 249 "Plastics", the secretariat of
which is held by IBN.
This European Standard shall be given the status of a national standard, either by publication
of an identical text or by endorsement, at the latest by June 2002, and conflicting national
standards shall be withdrawn at the latest by June 2002.
This document supersedes EN 1624:1997.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United
Kingdom.
Endorsement notice
The text of ISO 1624:2001 has been approved by CEN as EN ISO 1624:2001 without any
modifications.
INTERNATIONAL ISO
STANDARD 1624
Second edition
2001-12-15
Plastics — Vinyl chloride homopolymer and
copolymer resins — Sieve analysis in water
Plastiques — Résines d'homopolymères et de copolymères de chlorure de
vinyle — Analyse granulométrique par tamisage sous courant d'eau

Reference number
ISO 1624:2001(E)
©
ISO 2001
ISO 1624:2001(E)
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ii © ISO 2001 – All rights reserved

ISO 1624:2001(E)
Contents Page
Foreword.iv
1 Scope .1
2 Normative reference.1
3 Term and definition .1
4 Principle.1
5 Reagent.1
6 Apparatus .2
7 Procedure .2
8 Expression of results .5
9 Precision.6
10 Test report .6

ISO 1624:2001(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
The main task of technical committees is to prepare International Standards. Draft International Standards adopted
by the technical committees are circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 1624 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic
materials.
This second edition cancels and replaces the first edition (ISO 1624:1978), which has been modified in the
following respects:
 the drying temperature has been raised from 80 °C to 110 °C;
 a precision statement based on current test data has been included.
iv © ISO 2001 – All rights reserved

INTERNATIONAL STANDARD ISO 1624:2001(E)

Plastics — Vinyl chloride homopolymer and copolymer resins —
Sieve analysis in water
1 Scope
This International Standard specifies a method for the determination of the sieve retention of vinyl chloride
homopolymer and copolymer resins. Control of this characteristic can help to ensure consistency of supply and
predictable processing behaviour.
2 Normative reference
The following normative document contains provisions which, through reference in this text, constitute provisions of
this International Standard. F
...