SIST EN ISO 21545:2021
(Main)Paints and varnishes - Determination of settling (ISO 21545:2018)
Paints and varnishes - Determination of settling (ISO 21545:2018)
This document specifies a method for determining the settling of coating materials. It is used to determine short-time settling, e.g. during transport or in an electro-deposition bath.
Beschichtungsstoffe - Bestimmung des Absetzverhaltens (ISO 21545:2018)
Dieses Dokument legt ein Verfahren zum Bestimmen des Absetzverhaltens von Beschichtungsstoffen fest. Es wird angewendet, um das Absetzen innerhalb einer kurzen Zeitspanne, z. B. während des Transports oder in einem Elektrotauchbad, zu bestimmen.
Peintures et vernis - Détermination de la sédimentation (ISO 21545:2018)
Le présent document spécifie une méthode de détermination de la sédimentation des matériaux de peinture. Elle est utilisée pour déterminer la sédimentation à court terme, par exemple pendant le transport ou dans un bain d'électrodéposition.
Barve in laki - Določanje usedanja (ISO 21545:2018)
General Information
- Status
- Published
- Public Enquiry End Date
- 01-Oct-2020
- Publication Date
- 27-Jan-2021
- Technical Committee
- IBLP - Paints and varnishes
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 11-Jan-2021
- Due Date
- 18-Mar-2021
- Completion Date
- 28-Jan-2021
Overview - EN ISO 21545:2020 / ISO 21545:2018
EN ISO 21545:2020 (identical to ISO 21545:2018) specifies a standard laboratory method for the determination of settling in paints and varnishes (coating materials). The method quantifies short‑time settling - for example during transport or while in an electro‑deposition (electrocoat) bath - by measuring the volume of sediment that forms in a closed measuring cylinder over an agreed holding time.
Key topics and technical requirements
- Scope: Short‑time settling of coating materials; not a long‑term shelf‑life test.
- Principle: Allow a representative sample to stand in a graduated glass cylinder at room temperature and measure sediment height/volume after an agreed time.
- Sampling & preparation: Follow ISO 15528 (sampling) and ISO 1513 (sample preparation and stirring) before testing.
- Apparatus required:
- Laboratory stirrer.
- 100 ml (1 ml graduations) or 250 ml (2 ml graduations) measuring cylinder, accuracy class B per ISO 4788.
- Time measuring device with at least 30 s reading accuracy.
- Test conditions: Conduct test at room temperature (record actual temperature). Cylinder size and holding time must be agreed and reported.
- Procedure highlights:
- Clean and dry cylinder using suitable solvent.
- Fill to the specified volume mark and cap the cylinder.
- Let stand for the agreed holding period.
- Read sediment volume in millilitres and express as a percentage of total volume.
- Results & reporting: Test report must identify the product, reference ISO 21545, record temperature, cylinder size, holding time, result (sediment volume %), any deviations or unusual observations, and test date.
- Precision: No precision data are provided in this document.
Practical applications and users
- Who uses it: Paint and varnish manufacturers, QC laboratories, formulation and R&D teams, electrocoat operators, raw‑material suppliers and transport/logistics specialists concerned with product stability during handling.
- Why it’s useful: Provides a simple, repeatable short‑term settling test to:
- Detect rapid sedimentation that could affect application consistency.
- Assess stability during transportation or in electro‑deposition baths.
- Support QC acceptance criteria and batch release decisions.
- Limitations: This method measures short‑term settling only. For long‑term shelf stability, alternative tests (for example ASTM D869) are referenced.
Related standards
- ISO 1513 - Examination and preparation of test samples
- ISO 15528 - Sampling of paints, varnishes and raw materials
- ISO 4618 - Terms and definitions for paints and varnishes (defines “settling”)
- ISO 4788 - Laboratory graduated measuring cylinders (accuracy class)
- ASTM D869 - Alternative method for evaluating degree of settling (longer‑term/shelf tests)
Keywords: EN ISO 21545:2020, ISO 21545:2018, settling test, paints and varnishes, determination of settling, coating materials, measuring cylinder, short‑time settling, electrocoating.
Frequently Asked Questions
SIST EN ISO 21545:2021 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Paints and varnishes - Determination of settling (ISO 21545:2018)". This standard covers: This document specifies a method for determining the settling of coating materials. It is used to determine short-time settling, e.g. during transport or in an electro-deposition bath.
This document specifies a method for determining the settling of coating materials. It is used to determine short-time settling, e.g. during transport or in an electro-deposition bath.
SIST EN ISO 21545:2021 is classified under the following ICS (International Classification for Standards) categories: 87.040 - Paints and varnishes. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 21545:2021 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2021
Barve in laki - Določanje usedanja (ISO 21545:2018)
Paints and varnishes - Determination of settling (ISO 21545:2018)
Beschichtungsstoffe - Bestimmung des Absetzverhaltens (ISO 21545:2018)
Peintures et vernis - Détermination de la sédimentation (ISO 21545:2018)
Ta slovenski standard je istoveten z: EN ISO 21545:2020
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 21545
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2020
EUROPÄISCHE NORM
ICS 87.040
English Version
Paints and varnishes - Determination of settling (ISO
21545:2018)
Peintures et vernis - Détermination de la Beschichtungsstoffe - Bestimmung des
sédimentation (ISO 21545:2018) Absetzverhaltens (ISO 21545:2018)
This European Standard was approved by CEN on 30 November 2020.
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 CEN-CENELEC 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 CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21545:2020 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 21545:2018 has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes” of the International Organization for Standardization (ISO) and has been taken over as
which is held by DIN.
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 2021, and conflicting national standards shall be
withdrawn at the latest by June 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 21545:2018 has been approved by CEN as EN ISO 21545:2020 without any modification.
INTERNATIONAL ISO
STANDARD 21545
First edition
2018-08
Paints and varnishes — Determination
of settling
Peintures et vernis — Détermination de la sédimentation
Reference number
ISO 21545:2018(E)
©
ISO 2018
ISO 21545:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2018 – All rights reserved
ISO 21545:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Sampling and preparation of samples . 2
7 Procedure. 2
7.1 Test temperature . 2
7.2 Measuring cylinder . 2
7.3 Test
...
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