EN ISO 8655-7:2022

SLOVENSKI STANDARD
01-julij-2022
Nadomešča:
SIST EN ISO 8655-7:2006
SIST EN ISO 8655-7:2006/AC:2009
Volumetrične naprave, delujoče na bat - 7. del: Nadomestni merilni postopki za
določanje prostornine (ISO 8655-7:2022)
Piston-operated volumetric apparatus - Part 7: Alternative measurement procedures for
the determination of volume (ISO 8655-7:2022)
Volumenmessgeräte mit Hubkolben - Teil 7: Alternatives Prüfverfahren zur Bestimmung
des Volumens (ISO 8655-7:2022)
Appareils volumétriques à piston - Partie 7: Modes opératoires de mesure alternatifs
pour la détermination de volumes (ISO 8655-7:2022)
Ta slovenski standard je istoveten z: EN ISO 8655-7:2022
ICS:
17.060 Merjenje prostornine, mase, Measurement of volume,
gostote, viskoznosti mass, density, viscosity
71.040.20 Laboratorijska posoda in Laboratory ware and related
aparati apparatus
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 8655-7
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 17.060 Supersedes EN ISO 8655-7:2005, EN ISO 8655-
7:2005/AC:2009
English Version
Piston-operated volumetric apparatus - Part 7: Alternative
measurement procedures for the determination of volume
(ISO 8655-7:2022)
Appareils volumétriques à piston - Partie 7: Modes Volumenmessgeräte mit Hubkolben - Teil 7:
opératoires de mesure alternatifs pour la Alternatives Prüfverfahren zur Bestimmung des
détermination de volumes (ISO 8655-7:2022) Volumens (ISO 8655-7:2022)
This European Standard was approved by CEN on 13 February 2022.

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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8655-7:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 8655-7:2022) has been prepared by Technical Committee ISO/TC 48
"Laboratory equipment" in collaboration with Technical Committee CEN/TC 332 “Laboratory
equipment” the secretariat of 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 November 2022, and conflicting national standards
shall be withdrawn at the latest by November 2022.
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.
This document supersedes EN ISO 8655-7:2005, EN ISO 8655-7:2005/AC:2009.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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 8655-7:2022 has been approved by CEN as EN ISO 8655-7:2022 without any
modification.
INTERNATIONAL ISO
STANDARD 8655-7
Second edition
2022-04
Piston-operated volumetric
apparatus —
Part 7:
Alternative measurement procedures
for the determination of volume
Appareils volumétriques à piston —
Partie 7: Modes opératoires de mesure alternatifs pour la
détermination de volumes
Reference number
ISO 8655-7:2022(E)
ISO 8655-7:2022(E)
© ISO 2022
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
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Published in Switzerland
ii
ISO 8655-7:2022(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 General requirements . 2
4.1 Metrological confirmation . 2
4.2 Uncertainty of measurement . 2
4.3 Operator qualification . 2
5 Performance requirements . .3
5.1 Performance tolerances . 3
5.2 Operator impact . 3
6 Test conditions .3
6.1 General . 3
6.2 Test equipment . 3
6.3 Test room, environmental conditions . 3
6.4 Test volumes . 4
6.4.1 Fixed volume POVA. 4
6.4.2 Adjustable volume POVA . 4
6.5 Number of measurements per test volume . 4
6.6 Test liquids . 5
7 Evaluation . 5
7.1 Mean volume . 5
7.2 Systematic error of measurement . 5
7.3 Random error of measurement . 6
8 Test methods . 6
8.1 General . 6
8.2 Gravimetric method . . 7
8.3 Dual-dye ratiometric photometric method . 7
8.4 Single dye photometric method . 8
8.5 Hybrid photometric/gravimetric method for multichannel POVA . 8
8.6 Titration method . 8
8.7 Batch testing . 8
9 Dispense procedures .8
9.1 General . 8
9.2 Preparation . 9
9.3 Single-channel air displacement pipettes (in accordance with ISO 8655-2) . 9
9.3.1 General . 9
9.3.2 Test cycle . 9
9.4 Multi-channel pipettes (in accordance with ISO 8655-2) . 10
9.5 Positive displacement pipettes (in accordance with ISO 8655-2) . 11
9.6 Burettes (in accordance with ISO 8655-3) . 11
9.7 Dilutors (in accordance with ISO 8655-4) .12
9.7.1 General .
...