ISO/TS 21256-1:2020
Fine bubble technology — Cleaning applications — Part 1: Test method for cleaning salt (NaCl)-stained surfaces
This document describes the test method to evaluate the cleaning performance of ultrafine bubble water when used in high-pressure water jet to wash out salt-stained steel surfaces.
The evaluation is carried out by measuring comparative removal of salt stain from the surface of a test plate with the ultrafine bubble water to that with control water.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle of cleaning performance test
5 Test apparatus for cleaning test
5.1 High-pressure water jet
5.1.1 Test conditions
5.1.2 Characteristics of the high-pressure water jet
5.2 Measuring instrument
6 Salt-stained steel test plate for cleaning performance test
7 Procedure
7.1 General
7.2 Measurement before cleaning the surface of the steel test plate
7.3 Cleaning method of the surface of the steel test plate
7.4 Measurement of salt stains after cleaning the surface of the steel test plate
8 Calculation method of salt stain removal
8.1 Calculation method of salt removal ratio
8.2 Calculation method of salt removal quantity
9 Test report
Annex A (informative) Surface salinity meter
Annex B (informative) Example of evaluation results for cleaning of steel bridge girder edges
Annex C (informative) Example of test result table
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle of cleaning performance test
5 Test apparatus for cleaning test
5.1 High-pressure water jet
5.1.1 Test conditions
5.1.2 Characteristics of the high-pressure water jet
5.2 Measuring instrument
6 Salt-stained steel test plate for cleaning performance test
7 Procedure
7.1 General
7.2 Measurement before cleaning the surface of the steel test plate
7.3 Cleaning method of the surface of the steel test plate
7.4 Measurement of salt stains after cleaning the surface of the steel test plate
8 Calculation method of salt stain removal
8.1 Calculation method of salt removal ratio
8.2 Calculation method of salt removal quantity
9 Test report
Annex A (informative) Surface salinity meter
Annex B (informative) Example of evaluation results for cleaning of steel bridge girder edges
Annex C (informative) Example of test result table
Bibliography