ISO 13736:2021
Determination of flash point — Abel closed-cup method
This document specifies a method for the determination of the manual and automated closed cup flash point of combustible liquids having flash points between –30,0 °C to 75,0 °C. However, the precision given for this method is only valid for flash points in the range −8,5 °C to 75,0 °C.
This document is not applicable to water-borne paints.
NOTE 1 Water borne paints can be tested using ISO 3679[1].
NOTE 2 See 9.1 for the importance of this test in avoiding loss of volatile materials.
NOTE 3 Liquids containing halogenated compounds can give anomalous results.
NOTE 4 The thermometer specified for the manual apparatus limits the upper test temperature to 70,0 °C.
NOTE 5 See 13.1 for more specific information related to precision.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Chemicals and materials
6 Apparatus
7 Apparatus preparation
7.1 Location of the apparatus
7.2 Cleaning the test cup
7.3 Apparatus examination
7.4 Heating and cooling
7.4.1 Liquid baths
7.4.2 Solid metal baths
7.4.3 Test cup and cover
7.5 Apparatus verification
8 Sampling
9 Sampling handling
9.1 General
9.2 Subsampling
9.3 Samples containing undissolved water
9.4 Sample mixing
10 Procedure
11 Calculation
12 Expression of results
13 Precision
13.1 General
13.2 Repeatability, r
13.3 Reproducibility, R
14 Test report
Annex A (normative) Abel flash point apparatus
Annex B (normative) Positioning and fixing of test cup and heating vessel thermometers into thermometer collar
Annex C (normative) Temperature measuring device specifications
Annex D (normative) Apparatus verification
Annex E (informative) Flash point values of chemicals
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Chemicals and materials
6 Apparatus
7 Apparatus preparation
7.1 Location of the apparatus
7.2 Cleaning the test cup
7.3 Apparatus examination
7.4 Heating and cooling
7.4.1 Liquid baths
7.4.2 Solid metal baths
7.4.3 Test cup and cover
7.5 Apparatus verification
8 Sampling
9 Sampling handling
9.1 General
9.2 Subsampling
9.3 Samples containing undissolved water
9.4 Sample mixing
10 Procedure
11 Calculation
12 Expression of results
13 Precision
13.1 General
13.2 Repeatability, r
13.3 Reproducibility, R
14 Test report
Annex A (normative) Abel flash point apparatus
Annex B (normative) Positioning and fixing of test cup and heating vessel thermometers into thermometer collar
Annex C (normative) Temperature measuring device specifications
Annex D (normative) Apparatus verification
Annex E (informative) Flash point values of chemicals
Bibliography