NEN EN 14718 : 2014
Current
The latest, up-to-date edition.
INFLUENCE OF ORGANIC MATERIALS ON WATER INTENDED FOR HUMAN CONSUMPTION - DETERMINATION OF THE CHLORINE DEMAND - TEST METHOD
12-01-2013
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Principle
5 Reagents
5.1 Sodium hypochlorite solution
5.2 Test water
5.3 Rinsing water
5.4 Cleaning liquids for apparatus
6 Apparatus for Chlorine Demand Assessment
7 Procedural Constraints
8 Samples of Products and Test Pieces
8.1 Factory made products
8.2 Site applied products
8.3 Surface-area-to-volume ratio (S/V)
9 Preparation of Test Water and Apparatus
9.1 Test water
9.2 Preparation of apparatus
9.3 Cleaning of the glassware
9.4 Cleaning of stainless steel
10 Test Procedure
10.1 General
10.2 Flushing
10.3 Stagnation
10.4 Pre-washing
10.5 Determination of chlorine demand
10.6 Determination of free chlorine
11 Expression of Results
11.1 Description of the calculation
11.2 Validation of the test results
12 Test Report
a) Information on the product
b) Information on the procedure
c) Test results
Annex A (normative) Procedure for establishing the
suitability of apparatus and test water
Annex B (informative) Arrangement for flushing large
diameters pipes
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