IEC TS 62607-4-8:2020

IEC TS 62607-4-8 ®
Edition 1.0 2020-02
TECHNICAL
SPECIFICATION
colour
inside
Nanomanufacturing – Key control characteristics –
Part 4-8: Nano-enabled electrical energy storage – Determination of water
content in electrode nanomaterials, Karl Fischer method
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IEC TS 62607-4-8 ®
Edition 1.0 2020-02
TECHNICAL
SPECIFICATION
colour
inside
Nanomanufacturing – Key control characteristics –

Part 4-8: Nano-enabled electrical energy storage – Determination of water

content in electrode nanomaterials, Karl Fischer method

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 07.030; 07.120 ISBN 978-2-8322-7813-0

– 2 – IEC TS 62607-4-8:2020 © IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Principle . 8
5 Reagents . 9
5.1 Coulometric Karl Fischer reagent . 9
5.2 Methanol (anhydrous) . 9
5.3 Carrier gas . 9
5.4 Water standard for Karl Fischer coulometric titration . 9
6 Apparatus . 9
6.1 Karl Fischer coulometric titration apparatus . 9
6.2 Evaporator . 9
6.3 Analytical balance . 10
6.4 Sample container . 10
6.5 Micro-syringe . 10
6.6 Dew-point hygrometer . 10
7 Sample handling and sampling . 10
7.1 Sample handling . 10
7.2 Sampling. 11
8 Procedure . 11
8.1 Maintenance . 11
8.1.1 Reagent change . 11
8.1.2 Cleaning . 11
8.1.3 Calibration . 11
8.2 Measurement steps . 11
8.3 Water content of the sample . 12
9 Precision . 13
9.1 General . 13
9.2 Repeatability . 13
9.3 Reproducibility . 13
10 Test report . 13
Annex A (informative) Case study . 14
A.1 General . 14
A.2 Reagents . 14
A.2.1 Coulometric Karl Fischer reagent . 14
A.2.2 Methanol (anhydrous) . 14
A.2.3 Carrier gas . 14
A.2.4 Water standard for Karl Fischer coulometric titration . 14
A.3 Apparatus . 14
A.3.1 Karl Fischer coulometric titration apparatus . 14
A.3.2 Evaporator . 14
A.3.3 Analytical balance . 14
A.3.4 Sample container . 14
A.3.5 Micro-syringe . 14

A.3.6 Dew-point hygrometer. 15
A.4 Sampling. 15
A.5 Measurement steps . 15
A.6 Test results . 15
Bibliography . 17

Figure 1 – Example of Karl Fischer coulometric titration apparatus and evaporator . 10
Figure A.1 – Sample container . 15

Table 1 – Sample mass against water to be determined . 11
Table A.1 – Test data of water content in sample A . 16

– 4 – IEC TS 62607-4-8:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NANOMANUFACTURING –
KEY CONTROL CHARACTERISTICS –
Part 4-8: Nano-enabled electrical energy storage – Determination of
water content in electrode nanomaterials, Karl Fischer method

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IEC TS 62607-4-8, which is a Technical Specification, has been prepared by IEC technical
committee 113: Nanotechnology for electrotechnical products and systems.
...