EN IEC 62321-14:2026

• Abstract:

  This part of IEC 62321 specifies one technique for the determination of short-chain and medium-chain chlorinated paraffins (SCCPs: C10-C13 and MCCPs: C14-C17) in plastics of electrotechnical products.; This document specifies a quantitative method for the determination of short-chain and mediumchain chlorinated paraffins in electrotechnical products by means of solvent extraction and gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS).; This test method has been evaluated for use with ABS (acrylonitrile butadiene styrene) and PVC (polyvinyl chloride) containing individual SCCPs ranging from 369,7 mg/kg to 8 653,9 mg/kg and MCCPs ranging from 2 141,1 mg/kg to 27 329,6 mg/kg as shown in the pre-IIS 14 results in Annex C. The use of this test method for other plastics and concentration ranges has not been specifically evaluated.; This document is a basic environment horizontal publication focusing on test methods and is primarily intended for use by committees in the preparation of publications within the area of environment in accordance with the principles laid down in IEC Guide 123. Wherever applicable, it is the responsibility of committees to make use of environment basic publications in the preparation of their environment group and product publications. Committees can apply this document directly to products when they do not develop a product publication in the area of environment.; WARNING – Persons using this International Standard should be familiar with normal laboratory practice. This International Standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions.

• Status: Published
• Publication Date: 23-Jul-2026
• ICS: 13.020.01 - Environment and environmental protection in general
• ICS: 43.040.10 - Electrical and electronic equipment
• Technical Committee: CLC/TC 111X - Environment
• Drafting Committee: IEC/TC 111 - Environmental standardization for electrical and electronic products and systems
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 24-Jul-2026
• Due Date: 30-Jun-2025
• Completion Date: 24-Jul-2026
• Ref Project: SIST EN IEC 62321-14:2026 - Determination of certain substances in electrotechnical products - Part 14: Determination of short-chain chlorinated paraffins (SCCPs) and medium-chain chlorinated paraffins (MCCPs) in electrotechnical products by gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS)

• Refers: EN IEC 62321-2:2021 - Determination of certain substances in electrotechnical products - Part 2: Disassembly, disjointment and mechanical sample preparation
• Effective Date: 07-Jul-2026
• Refers: EN ISO 3696:1995 - Water for analytical laboratory use - Specification and test methods (ISO 3696:1987)
• Effective Date: 07-Jul-2026
• Refers: EN ISO 4787:2021 - Laboratory glass and plastic ware - Volumetric instruments - Methods for testing of capacity and for use (ISO 4787:2021)
• Effective Date: 07-Jul-2026
• Refers: EN 62321-1:2013 - Determination of certain substances in electrotechnical products - Part 1: Introduction and overview
• Effective Date: 07-Jul-2026

Overview

EN IEC 62321-14:2026, published by CLC, provides a standardized method for the determination of short-chain chlorinated paraffins (SCCPs) and medium-chain chlorinated paraffins (MCCPs) in plastics used in electrotechnical products. This part of the IEC 62321 series focuses on quantitative analysis using gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS). With growing global regulations targeting hazardous substances in electronics, EN IEC 62321-14:2026 supports the consistent, precise detection of SCCPs and MCCPs, facilitating compliance and environmentally responsible manufacturing.

Key Topics

• Substances Covered:

  • SCCPs (short-chain chlorinated paraffins, C10-C13)
  • MCCPs (medium-chain chlorinated paraffins, C14-C17)

• Sample Types:

  • Applies to plastics commonly found in electrical and electronic equipment, such as ABS (acrylonitrile butadiene styrene) and PVC (polyvinyl chloride).

• Analytical Technique:

  • Utilizes solvent extraction followed by GC-NCI-MS for high sensitivity and specificity.
  • Includes detailed procedures for sample preparation, extraction (including ultrasonic methods), clean-up steps, and calibration.

• Quality Assurance:

  • Incorporates method validation, repeatability, and reproducibility verification based on interlaboratory studies.
  • Provides requirements for quality control checks, matrix spike recoveries, and instrument calibration to ensure reliability of results.

• Regulatory Context:

  • Addresses the increasing demands imposed by international environmental and product safety regulations concerning hazardous substances commonly restricted in the electrical and electronic industry.

Applications

• Regulatory Compliance:

  • Assists manufacturers, suppliers, and laboratories in adhering to international directives such as RoHS (Restriction of Hazardous Substances) by providing an accepted method for detecting and measuring SCCPs and MCCPs in product materials.

• Environmental Protection:

  • Supports environmental and health initiatives by enabling the identification and quantification of potentially harmful chlorinated paraffins, facilitating reduced use and improved waste management in the electrotechnical sector.

• Material Verification:

  • Useful for quality control within production lines to verify that incoming raw materials and finished products meet specific substance restrictions.

• Product Certification:

  • Serves as a reference method for third-party testing and certification bodies assessing the chemical safety of electronics and electrical equipment.

Related Standards

• IEC 62321-1:2013
  Determination of certain substances in electrotechnical products – Part 1: Introduction and overview

• IEC 62321-2
  Determination of certain substances in electrotechnical products – Part 2: Disassembly, disjointment, and mechanical sample preparation

• ISO 3696
  Water for analytical laboratory use – Specification and test methods

• ISO 4787
  Laboratory glassware - Volumetric instruments - Methods for testing of capacity and for use

• Other IEC 62321 Parts
  Cover testing methods for other substances such as lead, cadmium, mercury, and brominated flame retardants in electrotechnical products.

---

EN IEC 62321-14:2026 is an essential tool for environmental compliance in the electronics industry, providing an internationally recognized protocol for detecting SCCPs and MCCPs in plastics. Through the application of GC-NCI-MS, organizations can achieve accurate substance determination, minimize regulatory risks, and contribute to safer, more sustainable products. For professionals involved in materials testing, product certification, and regulatory affairs, adherence to this standard is critical for both market access and corporate responsibility.

SLOVENSKI STANDARD
01-september-2026
Določanje posameznih snovi v elektrotehničnih izdelkih - 14. del: Določanje
kloriranih parafinov (SCCP) s kratko verigo in kloriranih parafinov s srednje dolgo
verigo (MMCCP) v elektrotehničnih izdelkih s plinsko kromatografijo-negativno
kemijsko ionizacijo-masno spektrometrijo (GC-NCI-MS)
Determination of certain substances in electrotechnical products - Part 14: Determination
of short-chain chlorinated paraffins (SCCPs) and medium-chain chlorinated paraffins
(MCCPs) in electrotechnical products by gas chromatography-negative chemical
ionization-mass spectrometry (GC-NCI-MS)
Verfahren zur Bestimmung von bestimmten Substanzen in Produkten der Elektrotechnik
–Teil 14: Bestimmung von SCCP und MCCP in Produkten der Elektrotechnik mittels GC-
NCI-MS
DÉTERMINATION DE CERTAINES SUBSTANCES DANS LES PRODUITS
ÉLECTROTECHNIQUES - Partie 14: Détermination des paraffines chlorées à chaîne
courte (PCCC) et des paraffines chlorées à chaîne moyenne (PCCM) dans des produits
électrotechniques par chromatographie en phase gazeuse couplée à la spectrométrie de
masse avec ionisation chimique négative (GC-NCI-MS)
Ta slovenski standard je istoveten z: EN IEC 62321-14:2026
ICS:
13.020.01 Okolje in varstvo okolja na Environment and
splošno environmental protection in
general
43.040.10 Električna in elektronska Electrical and electronic
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62321-14

NORME EUROPÉENNE
EUROPÄISCHE NORM July 2026
ICS 13.020.01; 43.040.10
English Version
Determination of certain substances in electrotechnical products
- Part 14: Short-chain chlorinated paraffins (SCCPs) and
medium-chain chlorinated paraffins (MCCPs) in plastics by gas
chromatography-negative chemical ionization-mass
spectrometry (GC-NCI-MS)
(IEC 62321-14:2026)
Détermination de certaines substances dans les produits Verfahren zur Bestimmung von bestimmten Substanzen in
électrotechniques - Partie 14: Paraffines chlorées à chaîne Produkten der Elektrotechnik - Teil 14: Bestimmung von
courte (PCCC) et paraffines chlorées à chaîne moyenne SCCP und MCCP in Produkten der Elektrotechnik mittels
(PCCM) dans les plastiques par chromatographie en phase GC-NCI-MS
gazeuse couplée à la spectrométrie de masse avec (IEC 62321-14:2026)
ionisation chimique négative (GC-NCI-MS)
(IEC 62321-14:2026)
This European Standard was approved by CENELEC on 2026-07-03. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62321-14:2026 E

European foreword
The text of document 111/870/FDIS, future edition 1 of IEC 62321-14, prepared by TC 111
"Environmental standardization for electrical and electronic products and systems" was submitted to
the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 62321-14:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-07-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-07-31
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62321-14:2026 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
ISO 18219-1:2021 NOTE Approved as EN ISO 18219-1:2021 (not modified)
ISO 18219-2:2021 NOTE Approved as EN ISO 18219-2:2021 (not modified)
ISO 22818:2021 NOTE Approved as EN ISO 22818:2021 (not modified)
ISO 17034 NOTE Approved as EN ISO 17034
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 62321-1 2013 Determination of certain substances in EN 62321-1 2013
electrotechnical products - Part 1:
Introduction and overview
IEC 62321-2 - Determination of certain substances in EN IEC 62321-2 -
electrotechnical products - Part 2:
Disassembly, disjointment and mechanical
sample preparation
ISO 3696 - Water for analytical laboratory use - EN ISO 3696 -
Specification and test methods
ISO 4787 - Laboratory glass and plastic ware - EN ISO 4787 -
Volumetric instruments - Methods for
testing of capacity and for use

IEC 62321-14 ®
Edition 1.0 2026-05
INTERNATIONAL
STANDARD
HORIZONTAL PUBLICATION
Determination of certain substances in electrotechnical products -
Part 14: Short-chain chlorinated paraffins (SCCPs) and medium-chain
chlorinated paraffins (MCCPs) in plastics by gas chromatography-negative
chemical ionization-mass spectrometry (GC-NCI-MS)
ICS 13.020.01; 43.040.10 ISBN 978-2-8327-1227-6

IEC 62321-14:2026-05(en)
IEC 62321-14:2026 © IEC 2026
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions. 7
3.2 Abbreviated terms . 7
4 Principle . 7
5 Reagents and materials . 7
6 Apparatus . 8
7 Sampling . 8
8 Procedure . 8
8.1 Sample preparation . 8
8.1.1 Ultrasonic extraction . 8
8.1.2 Alternative extraction procedures. 9
8.1.3 Clean-up procedure . 9
8.2 Instrumental parameters . 9
8.3 Calibrants . 10
8.4 Calibration . 10
8.4.1 General . 10
8.4.2 Standard solutions . 11
9 Calculation of SCCPs and MCCPs concentration . 12
9.1 General . 12
9.2 Calculation . 12
10 Precision . 14
11 Quality assurance and quality control . 15
11.1 Performance . 15
11.2 Method detection limit and reporting limit . 16
12 Test report . 16
Annex A (informative) Additional GC-NCI-MS conditions . 17
Annex B (normative) Integration with peak shape evaluation (PSE) . 18
Annex C (informative) Results of international interlaboratory study of pre-IIS (pre-
IIS14-SCCPs and MCCPs) . 21
Bibliography . 22

Figure B.1 – SCCPs standard 59 % chlorides, different ion traces . 18
Figure B.2 – Examples for matching samples compared with SCCPs standard 59 %
chlorides, upper chromatogram standard, lower chromatogram sample. 19
Figure B.3 – Examples for partly matched samples compared with SCCPs standard
59 % chlorides, upper chromatogram standard, lower chromatogram sample . 19
Figure B.4 – MCCPs standard 55 % chlorides, different ion traces . 19
Figure B.5 – Examples for matching samples compared with MCCPs standard 55 %
chlorides, upper chromatogram standard, lower chromatogram sample. 20
Figure B.6 – Examples for partly matched samples compared with MCCPs standard
55 % chlorides, upper chromatogram standard, lower chromatogram sample . 20
IEC 62321-14:2026 © IEC 2026
Table 1 – Mass for quantification and qualification of SCCPs and MCCPs . 10
Table 2 – Commercially available SCCPs and MCCPs reference materials considered
suitable for this analysis . 10
Table 3 – Example of mixing ratio of SCCPs 59 % chlorides content and MCCPs 55 %
chlorides content . 11
Table 4 – Pre-IIS 14 repeatability and reproducibility for SCCPs . 14
Table 5 – Pre-IIS 14 repeatability and reproducibility for MCCPs . 14
Table A.1 – Instrumental parameters for GC-NCI-MS . 17
Table C.1 – Statistical data for GC-NCI-MS . 21

IEC 62321-14:2026 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Determination of certain substances in electrotechnical products -
Part 14: Short-chain chlorinated paraffins (SCCPs) and medium-chain
chlorinated paraffins (MCCPs) in plastics by gas chromatography-
negative chemical ionization-mass spectrometry (GC-NCI-MS)

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
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6) All users should ensure that they have the latest edition of this publication.
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expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 62321-14 has been prepared by IEC technical committee 111: Environmental
standardization for electrical and electronic products and systems. It is an International
Standard.
This document has been given the status of a horizontal document in accordance with the
ISO/IEC Directives, Part 1.
IEC 62321-14:2026 © IEC 2026
The text of this International Standard is based on the following documents:
Draft Report on voting
111/870/FDIS 111/888/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 62321 series, published under the general title Determination of
certain substances in electrotechnical products, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
IEC 62321-14:2026 © IEC 2026
INTRODUCTION
The widespread use of electrotechnical products has drawn increased attention to their impact
on the environment. In many countries this has resulted in the adoption of regulations affecting
wastes, substances and energy use of electrotechnical products.
The use of certain substances (e.g. lead (Pb), cadmium (Cd) and polybrominated diphenyl
ethers (PBDEs)) in electrotechnical products is a source of concern in current and proposed
regional legislation.
The purpose of the IEC 62321 series is therefore to provide test methods that will allow the
electrotechnical industry to determine the levels of certain substances of concern in
electrotechnical products on a consistent global basis.
This first edition of IEC 62321-14 introduces a new subject covering short-chain chlorinated
paraffins (SCCPs) and medium-chain chlorinated paraffins (MCCPs).

IEC 62321-14:2026 © IEC 2026
1 Scope
This part of IEC 62321 specifies one technique for the determination of short-chain and
medium-chain chlorinated paraffins (SCCPs: C10-C13 and MCCPs: C14-C17) in plastics of
electrotechnical products.
This document specifies a quantitative method for the determination of short-chain and medium-
chain chlorinated paraffins in electrotechnical products by means of solvent extraction and gas
chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS).
This test method has been evaluated for use with ABS (acrylonitrile butadiene styrene) and
PVC (polyvinyl chloride) containing individual SCCPs ranging from 369,7 mg/kg to
8 653,9 mg/kg and MCCPs ranging from 2 141,1 mg/kg to 27 329,6 mg/kg as shown in the pre-
IIS 14 results in Annex C. The use of this test method for other plastics and concentration
ranges has not been specifically evaluated.
This document is a basic environment horizontal publication focusing on test methods and is
primarily intended for use by committees in the preparation of publications within the area of
environment in accordance with the principles laid down in IEC Guide 123. Wherever applicable,
it is the responsibility of committees to make use of environment basic publications in the
preparation of their environment group and product publications. Committees can apply this
document directly to products when they do not develop a product publication in the area of
environment.
WARNING – Persons using this International Standard should be familiar with normal laboratory
practice. This International Standard does not purport to address all of the safety problems, if
any, associated with its use. It is the responsibility of the user to establish appropriate safety
and health practices and to ensure compliance with any national regulatory conditions.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 62321-1:2013, Determination of certain substances in electrotechnical products - Part 1:
Introduction and overview
IEC 62321-2, Determination of certain substances in electrotechnical products - Part 2:
Disassembly, disjointment and mechanical sample preparation
ISO 3696, Water for analytical laboratory use - Specification and test methods
ISO 4787, Laboratory glass and plastic ware - Volumetric instruments - Methods for testing of
capacity and for use
IEC 62321-14:2026 © IEC 2026
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62321-1 apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
– IEC Electropedia: available at https://www.electropedia.org/
– ISO Online browsing platform: available at https://www.iso.org/obp
3.2 Abbreviated terms
ABS acrylonitrile butadiene styrene
CCC continuing calibration check
CI chemical ionization
GC gas chromatography
GC-NCI-MS gas chromatography negative chemical ionization mass spectrometry
IS internal standard
MDL method detection limit
MCCPs medium-chain chlorinated paraffins
PSE peak shape evaluation
PVC polyvinyl chloride
RSD relative standard deviation
SCCPs short-chain chlorinated paraffins
SIM selective ion monitoring
TIC total ion chromatogram
4 Principle
The test samples are extracted by ultrasonic extraction followed by a sulfuric acid clean-up.
The analysis is carried out using gas chromatography-negative chemical ionization-mass
spectrometry (GC-NCI-MS).
5 Reagents and materials
Analytical grade chemicals shall be used, unless otherwise specified:
a) water (Grade 1 specified in ISO 3696 used for preparation of labware and others);
b) n-hexane;
c) toluene;
d) SCCPs standard solution: Standard substances of short-chain chlorinated paraffins with
55,5 % and 63 % chlorination degree, respectively, with a concentration of 100 µg/ml;
e) MCCPs standard solution: Standard substances of medium-chain chlorinated paraffins with
52 % and 57 % chlorination degree, respectively, with a concentration of 100 µg/ml;
f) IS solution A: Lindane as internal standard in solution, about 100 µg of IS/ml in n-hexane;
g) IS solution B: Dilute IS solution A (see item f)) in a ratio 1/50 in n-hexane. Lindane as internal
standard in solution, 2 µg of IS/ml in n-hexane;
IEC 62321-14:2026 © IEC 2026
h) concentrated sulfuric acid (ρ = 1,84 g/ml at 20 °C);
i) helium (purity of greater than a volume fraction of 99,999 %);
j) methane (CI gas, purity of greater than a volume fraction of 99,995 %);
k) nitrogen (purity of greater than a volume fraction of 99,9 %).
6 Apparatus
The usual laboratory equipment and laboratory glassware, in accordance with ISO 4787, shall
be used, in addition to the following:
a) pipettes in required sizes and variable pipettes;
b) analytical balance with a precision of at least 0,000 1 g;
c) tight sealable glass vials with lids, in capacities of 20 ml and 2 ml, suitable for solvent
extraction, sulfuric acid clean-up and GC-NCI-MS analysis;
d) evaporation apparatus, for example heating block with a controlled flow of gas over the
liquid or vacuum rotary evaporator with vacuum control;
e) membrane filter, pore of a width of 0,45 µm;
f) vortex agitator;
g) shaker, ensuring an efficient mixing of the phases;
h) gas chromatograph coupled to a negative chemical ionization mass selective detector
GC-NCI-MS system;
i) cryogenic grinder with liquid nitrogen cooling;
j) centrifuge, capable of speeds greater than or equal to 4 000 r/min;
k) ultrasonic bath, with controllable heating, capable of maintaining a temperature of about
60 °C.
7 Sampling
As described in IEC 62321-2, the following procedure shall be used, unless indicated otherwise.
Cut samples into pieces of a size of approximately 2 mm × 2 mm or smaller
...