I.S. EN 62021-1:2003
Current
The latest, up-to-date edition.
Hardcopy , PDF
English
01-01-2003
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and auxiliary products
5.1 Reagents
5.2 Titration reagent
5.3 Titration solvent
5.4 Potassium hydrogen phthalate, primary standard
5.5 Potassium chloride reference electrolyte
5.6 Aqueous buffer solutions
5.7 Cleaning solution
6 Apparatus
6.1 Potentiometric titration apparatus
6.2 Glass indicating electrode
6.3 Reference electrode
6.4 Stirrer
6.5 Titration vessel
6.6 Titration stand
7 Sampling
8 Preparation and maintenance of electrode system
9 Calibration of apparatus
10 Procedure
10.1 Standardization of alcoholic potassium hydroxide
solution
10.2 Blank titration
10.3 Sample titration
11 Calculation
12 Precision
12.1 Repeatability
12.2 Reproducibility
13 Report
Bibliography
Important note : All end users must be registered with an Account prior to user licenses being assigned.Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.