ISO 19403-3:2017 specifies a test method to measure the surface tension of liquids with an optical method using the pendant drop. The method can be applied for the characterization of liquid coating materials. The applicability can be restricted for liquids with non-Newtonian rheology[1]. NOTE For other methods to determine the surface tension, see e.g. EN 14370 and ISO 1409.
[1] This term is defined in DIN 1342-1.
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Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus and materials
6 Sampling
7 Procedure
7.1 General
7.2 Determination of the surface tension of the liquid
8 Evaluation
9 Precision
9.1 General
9.2 Repeatability limit, r
9.3 Reproducibility limit, R
10 Test report
Annex A Density of test liquids (informative)
Annex B Shape parameter, B (informative)
Annex C Details of an interlaboratory test (informative)
ISO 15528:2013 Paints, varnishes and raw materials for paints and varnishes -- Sampling
ISO 19403-1:2017 Paints and varnishes -- Wettability -- Part 1: Terminology and general principles
ISO 2811-1:2016 Paints and varnishes -- Determination of density -- Part 1: Pycnometer method
ISO 15528:2013 Paints, varnishes and raw materials for paints and varnishes -- Sampling
ISO 19403-1:2017 Paints and varnishes -- Wettability -- Part 1: Terminology and general principles
ISO 2811-1:2016 Paints and varnishes -- Determination of density -- Part 1: Pycnometer method
ISO 2811-2:2011 Paints and varnishes -- Determination of density -- Part 2: Immersed body (plummet) method
ISO 2811-3:2011 Paints and varnishes -- Determination of density -- Part 3: Oscillation method
ISO 2811-4:2011 Paints and varnishes -- Determination of density -- Part 4: Pressure cup method
ISO 4618:2014 Paints and varnishes -- Terms and definitions