EN ISO 13500:2008/A1:2010
(Amendment)Petroleum and natural gas industries - Drilling fluid materials - Specifications and tests - Amendment 1: Barite 4,1 (ISO 13500:2008/AMD 1:2010)
Petroleum and natural gas industries - Drilling fluid materials - Specifications and tests - Amendment 1: Barite 4,1 (ISO 13500:2008/AMD 1:2010)
Erdöl- und Erdgasindustrie - Bohrspülungen - Spezifikationen und Prüfungen - Änderung A1: Barite 4.10 (ISO 13500:2008/AMD 1:2010)
Industries du pétrole et du gaz naturel - Produits pour fluides de forage - Spécifications et essais - Amendement 1: Baryte 4,1 (ISO 13500:2008/AMD 1:2010)
Industrija za predelavo nafte in zemeljskega plina - Materiali za vrtalne tekočine - Specifikacije in preskusi - Dopolnilo 1: Barit 4.10 (ISO 13500:2008/AMD 1:2010)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 13500:2009/oprA1:2010
01-januar-2010
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Petroleum and natural gas industries - Drilling fluid materials - Specifications and tests -
Amendment 1: New Clause 20 - Barite 4.10 (ISO 13500:2008/DAM 1:2009)
Industries du pétrole et du gaz naturel - Produits pour fluides de forage - Spécifications
et essais - Amendement 1: Nouvel Article 20 - Baryte 4.10 (ISO 13500:2008/DAM
1:2009)
Ta slovenski standard je istoveten z: EN ISO 13500:2008/prA1
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
SIST EN ISO 13500:2009/oprA1:2010 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN ISO 13500:2009/oprA1:2010
SIST EN ISO 13500:2009/oprA1:2010
EUROPEAN STANDARD
DRAFT
EN ISO 13500:2008
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
October 2009
ICS 75.180.10
English Version
Petroleum and natural gas industries - Drilling fluid materials -
Specifications and tests - Amendment 1: New Clause 20 - Barite
4.10 (ISO 13500:2008/DAM 1:2009)
Industries du pétrole et du gaz naturel - Produits pour
fluides de forage - Spécifications et essais - Amendement
1: Nouvel Article 20 - Baryte 4.10 (ISO 13500:2008/DAM
1:2009)
This draft amendment is submitted to CEN members for parallel enquiry. It has been drawn up by the Technical Committee CEN/TC 12.
This draft amendment A1, if approved, will modify the European Standard EN ISO 13500:2008. If this draft becomes an amendment, CEN
members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this amendment
into the relevant national standard without any alteration.
This draft amendment was established by CEN 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 Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13500:2008/prA1:2009: E
worldwide for CEN national Members.
SIST EN ISO 13500:2009/oprA1:2010
EN ISO 13500:2008/prA1:2009 (E)
Contents Page
Foreword .3
SIST EN ISO 13500:2009/oprA1:2010
EN ISO 13500:2008/prA1:2009 (E)
Foreword
This document (EN ISO 13500:2008/prA1:2009) has been prepared by Technical Committee ISO/TC 67
"Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries" in
collaboration with Technical CommitteeCEN/TC 12 “Materials, equipment and offshore structures for
petroleum, petrochemical and natural gas industries” the secretariat of which is held by AFNOR.
This document is currently submitted to the parallel Enquiry.
Endorsement notice
The text of ISO 13500:2008/DAM 1:2009 has been approved by CEN as a EN ISO 13500:2008/prA1:2009
without any modification.
SIST EN ISO 13500:2009/oprA1:2010
SIST EN ISO 13500:2009/oprA1:2010
DRAFT AMENDMENT ISO 13500:2008/DAmd 1
ISO/TC 67/SC 3 Secretariat: SN
Voting begins on: Voting terminates on:
2009-10-29 2010-03-29
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Petroleum and natural gas industries — Drilling fluid
materials — Specifications and tests
AMENDMENT 1: New Clause 20 — Barite 4.10
Industries du pétrole et du gaz naturel — Produits pour fluides de forage — Spécifications et essais
AMENDEMENT 1: Nouvel Article 20 — Baryte 4.10
ICS 75.180.10
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for Standardization (ISO), and
processed under the ISO-lead mode of collaboration as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel
five-month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments received, will be
submitted to a parallel two-month approval vote in ISO and formal vote in CEN.
In accordance with the provisions of Council Resolution 15/1993 this document is circulated in
the English language only.
Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué
en version anglaise seulement.
To expedite distribution, this document is circulated as received from the committee secretariat.
ISO Central Secretariat work of editing and text composition will be undertaken at publication
stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.
THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.
©
International Organization for Standardization, 2009
SIST EN ISO 13500:2009/oprA1:2010
ISO 13500:2008/DAmd 1
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©
ii ISO 2009 – All rights reserved
SIST EN ISO 13500:2009/oprA1:2010
ISO 13500:2008/DAM 1
Contents Page
Foreword .iv
1 Scope.1
20 Barite 4.10 .1
20.1 Principle.1
20.2 Reagents and apparatus — Density by Le Chatelier flask.2
20.3 Procedure — Density by Le Chatelier flask.2
20.4 Calculation — Density by Le Chatelier flask .3
20.5 Reagents and apparatus — Water-soluble alkaline earths as calcium .3
20.6 Procedure — Water-soluble alkaline earth metals as calcium .4
20.7 Calculation — Water-soluble alkaline earths as calcium .4
20.8 Reagents and materials — Residue of diameter greater than 75 µm.5
20.9 Procedure — Residue of diameter greater than 75 µm .5
20.10 Calculation — Residue of diameter greater than 75 µm.6
20.11 Reagents and apparatus — Particles less than 6 µm in equivalent spherical diameter
by sedimentation method.6
20.12 Procedure — Particles less than 6 µm in equivalent spherical diameter by sedimentation
method.7
20.13 Calculation — Particles less than 6 µm in equivalent spherical diameter by sedimentation
method.7
SIST EN ISO 13500:2009/oprA1:2010
ISO 13500:2008/DAM 1
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 2.
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 document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO 13500:2008 was prepared by Technical Committee ISO/TC 67, Petroleum,
petrochemical and natural gas industries, Subcommittee SC 3, Drilling and completion fluids, and wellbore
cements.
iv © ISO 2009 – All rights reserved
SIST EN ISO 13500:2009/oprA1:2010
DRAFT AMENDMENT ISO 13500:2008/DAM 1
Petroleum and natural gas industries — Drilling fluid
materials — Specifications and tests
AMENDMENT 1: New Clause 20 — Barite 4.10
1 Scope
This Technical Corrigendum 1 to International Standard 13500:2008 and API Specification 13A, Specifications
for Drilling Fluid Materials, includes a newly available drilling fluid product. This corrigendum covers the
physical properties and testing of Barite 4.10. This corrigendum is prepared as an alternative to ISO 13500,
Clause 7, Barite/API Spec 13A, Section 7 and should not be interpreted as a replacement for Clause or
Section 7 Barite. This International Standard is intended for the use of manufacturers of named products.
20 Barite 4.10
20.1 Principle
20.1.1 Drilling grade barite is produced from commercial barium sulfate-containing ores. The manufacturer
shall retain certificates of analysis or similar documentation on these commercial barium sulfate ores. It may
be produced from a single ore or a blend of ores and may be a straight-mined product or processed by
beneficiation methods, i.e. washing, tabling, jigging, or flotation. It may contain accessory minerals other than
the barium sulfate (BaSO ) mineral. Because of mineral impurities, commercial barite may vary in colour from
off-white to grey to red or brown. Common accessory minerals are silicates such as quartz and chert,
carbonate compounds such as siderite and dolomite, and metallic oxide and sulfide compounds. Although
these minerals are normally insoluble, they can, under certain conditions, react with
...
SLOVENSKI STANDARD
01-marec-2014
,QGXVWULMD]DSUHGHODYRQDIWHLQ]HPHOMVNHJDSOLQD0DWHULDOL]DYUWDOQHWHNRþLQH
6SHFLILNDFLMHLQSUHVNXVL'RSROQLOR %DULW ,62 $0'
Petroleum and natural gas industries - Drilling fluid materials - Specifications and tests -
Amendment 1: Barite 4,1 (ISO 13500:2008/AMD 1:2010)
Erdöl- und Erdgasindustrie - Bohrspülungen - Spezifikationen und Prüfungen - Änderung
A1: Barite 4.10 (ISO 13500:2008/AMD 1:2010)
Industries du pétrole et du gaz naturel - Produits pour fluides de forage - Spécifications
et essais - Amendement 1: Baryte 4,1 (ISO 13500:2008/AMD 1:2010)
Ta slovenski standard je istoveten z: EN ISO 13500:2008/A1:2010
ICS:
75.180.10 Oprema za raziskovanje in Exploratory and extraction
odkopavanje equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 13500:2008/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2010
ICS 75.180.10
English Version
Petroleum and natural gas industries - Drilling fluid materials -
Specifications and tests - Amendment 1: Barite 4,1 (ISO
13500:2008/AMD 1:2010)
Industries du pétrole et du gaz naturel - Produits pour Erdöl- und Erdgasindustrie - Bohrspülungen -
fluides de forage - Spécifications et essais - Amendement Spezifikationen und Prüfungen - Änderung A1: Barite 4.10
1: Baryte 4,1 (ISO 13500:2008/AMD 1:2010) (ISO 13500:2008/AMD 1:2010)
This amendment A1 modifies the European Standard EN ISO 13500:2008; it was approved by CEN on 13 November 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant 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 amendment 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13500:2008/A1:2010: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 13500:2008/A1:2010) has been prepared by Technical Committee ISO/TC 67
"Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries" in
collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for
petroleum, petrochemical and natural gas industries” the secretariat of which is held by AFNOR.
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 2011, and conflicting national standards shall be withdrawn at
the latest by June 2011.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] 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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 13500:2008/A1:2010 has been approved by CEN as a EN ISO 13500:2008/A1:2010 without
any modification.
INTERNATIONAL ISO
STANDARD 13500
Third edition
2008-11-01
AMENDMENT 1
2010-12-01
Petroleum and natural gas industries —
Drilling fluid materials — Specifications
and tests
AMENDMENT 1: Barite 4,1
Industries du pétrole et du gaz naturel — Produits pour fluides
de forage — Spécifications et essais
AMENDEMENT 1: Baryte 4,1
Reference number
ISO 13500:2008/Amd.1:2010(E)
©
ISO 2010
ISO 13500:2008/Amd.1:2010(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.
© ISO 2010
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2010 – All rights reserved
ISO 13500:2008/Amd.1:2010(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 2.
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 document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO 13500:2008 was prepared by Technical Committee ISO/TC 67, Materials, equipment
and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 3, Drilling
and completion fluids, and well cements.
1)
Amendment 1 to ISO 13500:2008 covers the physical properties and testing of the newly available drilling
2 )
fluid product, Barite 4,1. It constitutes an alternative to the specifications of Clause 7 , which cover the
physical properties and testing of Barite, and is not intended to replace Clause 7.
1) Amendment 1 to ISO 13500:2008 also constitutes Amendment 1 to API Specification 13A.
2) ISO 13500:2008, Clause 7, is equivalent to API Specification 13A, Section 7.
ISO 13500:2008/Amd.1:2010(E)
Petroleum and natural gas industries — Drilling fluid
materials — Specifications and tests
AMENDMENT 1: Barite 4,1
Page 82
Add the following new clause immediately after Subclause 19.8.3.
20 Barite 4,1
20.1 Principle
20.1.1 Drilling grade barite is produced from commercial barium sulfate-containing ores. The manufacturer
shall retain certificates of analysis or similar documentation on these commercial barium sulfate ores. It may
be produced from a single ore or a blend of ores and may be a straight-mined product or processed by
beneficiation methods, i.e. washing, tabling, jigging, or flotation. It may contain accessory minerals other than
the barium sulfate (BaSO ) mineral. Because of mineral impurities, commercial barite may vary in colour from
off-white to grey to red or brown. Common accessory minerals are silicates such as quartz and chert,
carbonate compounds such as siderite and dolomite, and metallic oxide and sulfide compounds. Although
these minerals are normally insoluble, they can, under certain conditions, react with other components in
some types of drilling fluids and cause adverse changes in the drilling fluid properties. (See Annex A for more
details.)
20.1.2 Drilling grade barium sulfate meeting the Barite 4,1 physical and chemical specifications listed in
Table 19 is not intended to meet the requirements of performance tests described in ISO and API publications.
Additionally, it is not intended to be used as a reference or calibration material as specified in ISO and API
publications.
20.1.3 End users should be aware that the material described in this clause has a lower density than Barite
as specified in Clause 7. Drilling fluid formulations should be developed to accommodate this lower density
material. Maximum practical drilling fluid density for specific formulations may be lower than attainable with
Barite as specified in Clause 7.
20.1.4 End users should review fluid engineering calculations to determine where density differences
between Barite 4,1, as specified in this clause, and Barite, as specified in Clause 7, will require revisions to
these calculations.
20.1.5 Barite 4,1 shall be deemed to meet the requirements of this International Standard if a composite
sample representing no more than one day's production conforms to the chemical and physical specifications
of Table 19, represents the product produced, and is controlled by the manufacturer.
ISO 13500:2008/Amd.1:2010(E)
Table 19 — Barite 4,1 physical and chemical requirements
Requirement Standard
Density 4,10 g/ml, minimum
Water-soluble alkaline earth metals, as calcium 250 mg/kg, maximum
Residue greater than 75 μm Maximum mass fraction, 3,0 %
Particles less than 6 μm in equivalent spherical diameter Maximum mass fraction, 30 %
20.2 Reagents and apparatus — Density by Le Chatelier flask
20.2.1 Kerosene or mineral spirits.
20.2.2 Oven, regulated to 105 °C ± 3 °C (220 °F ± 5 °F).
20.2.3 Desiccator, with calcium sulfate (CAS No. 7778-18-9) desiccant or equivalent.
20.2.4 Le Chatelier flask, with graduations of 0,1 ml, clamped or weighted to prevent flotation in water bath.
20.2.5 Constant-temperature bath, transparent at 32 °C ± 0,5 °C regulated to ±0,1 °C (90 °F ± 1,0 °F
regulated to ±0,2 °F) [e.g. approximately 40 l aquarium (fish tank) with heater/circulator attachment, or
functional equivalent].
20.2.6 Balance, with an accuracy of 0,01 g.
20.2.7 Pipette, volumetric, of 10 ml capacity.
20.2.8 Magnifying glass.
20.2.9 Dowel, wooden, approximately 8 mm (1/3 in) in diameter and 30 cm (12 in) in length, or a functional
equivalent.
20.2.10 Tissue paper, absorbent.
NOTE Laboratory grade tissues are non-absorbent and thus unsuitable for use in this test procedure.
20.2.11 Weighing dish, low-form, with spout, of approximately 100 ml capacity, or a functional equivalent.
20.2.12 Brush, small, fine bristle.
20.3 Procedure — Density by Le Chatelier flask
20.3.1 Take approximately 100 g of Barite 4,1 which has been oven dried for at least 2 h and cooled to room
temperature in a desiccator.
20.3.2 Fill a clean Le Chatelier flask to approximately 20 mm (0,8 in) below the zero mark with kerosene.
20.3.3 Place the flask upright in the constant-temperature bath. The level of water in the bath shall be higher
than the 24 ml graduation of the flask, but below the stopper level. Ensure flask is stabilized by use of clamps
or weights.
20.3.4 Allow the flask and contents to equilibrate for a minimum of 1 h. Using the magnifying glass with care
to keep eyes at meniscus level, read the volume at the lowest portion of the curved interface, and record the
initial volume to the nearest 0,05 ml without removing the flask from the constant-temperature bath. Record as
V .
2 © ISO 2010 – All rights reserved
ISO 13500:2008/Amd.1:2010(E)
If the kerosene level is above or below the −0,2 ml to +1,2 ml volume range after equilibrating, use the 10 ml
pipette to add or remove kerosene in order for it to come within this range. Allow the
...
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