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ISO

ISO 23581:2020

(Main)

Petroleum products and related products — Determination of kinematic viscosity — Method by Stabinger type viscometer

Petroleum products and related products — Determination of kinematic viscosity — Method by Stabinger type viscometer

This document specifies a procedure for the determination of kinematic viscosity (ν) at 40 °C in the range from 2 mm2/s to 6 mm2/s by calculation from dynamic viscosity (η) and density (ρ) of middle distillate fuels, fatty acid methyl ester fuels (FAME) and mixtures of these using the Stabinger type viscometer. The result obtained using the procedure described in this document depends on the rheological behaviour of the sample. This document is predominantly applicable to liquids whose shear stress and shear rate are proportional (Newtonian flow behaviour). However, if the viscosity changes significantly with the shear rate, comparison with other measuring methods is only permissible at similar shear rates.

Produits pétroliers et produits connexes — Détermination de la viscosité cinématique — Méthode avec un viscosimètre type Stabinger

General Information

Status
Withdrawn
Publication Date
16-Jul-2020
ICS
75.080 - Petroleum products in general
Technical Committee
ISO/TC 28 - Petroleum and related products, fuels and lubricants from natural or synthetic sources
Drafting Committee
ISO/TC 28 - Petroleum and related products, fuels and lubricants from natural or synthetic sources
Current Stage
9599 - Withdrawal of International Standard
Completion Date
14-May-2024
Ref Project

Relations

Consolidates
ISO 3365:2016 - Indexable hardmetal (carbide) inserts with wiper edges, without fixing hole — Dimensions
Effective Date
06-Jun-2022
Revised
ISO 23581:2024 - Petroleum products and related products — Determination of kinematic viscosity — Method by Stabinger type viscometer
Effective Date
06-Jun-2022

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ISO 23581:2020 - Petroleum products and related products -- Determination of kinematic viscosity -- Method by Stabinger type viscometerISO 23581:2020 - Petroleum products and related products -- Determination of kinematic viscosity -- Method by Stabinger type viscometer
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ISO 23581:2020 - Petroleum products and related products -- Determination of kinematic viscosity -- Method by Stabinger type viscometer
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INTERNATIONAL ISO
STANDARD 23581
First edition
2020-07
Petroleum products and related
products — Determination of
kinematic viscosity — Method by
Stabinger type viscometer
Reference number
ISO 23581:2020(E)
©
ISO 2020

---------------------- Page: 1 ----------------------
ISO 23581:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

---------------------- Page: 2 ----------------------
ISO 23581:2020(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Reagents and materials . 2
6 Apparatus . 3
6.1 General . 3
6.2 Stabinger type viscometer . 3
6.2.1 Viscosity measurement . 3
6.2.2 Density measurement . 3
6.2.3 Temperature control . . 4
6.2.4 Stability . 4
7 Sampling and sample handling . 4
7.1 Sampling . 4
7.2 Sample handling . 4
8 Calibration and verification . 4
8.1 General . 4
8.2 Instrument .
...

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