Basic Measurement and Techniques

2 Determination of Static Contact Angle 2.2.1 Basic Measurement and Techniques 

The measurement and analysis for each liquid-solid system should be repeated 5-10 times in different area of the sample. For a well-behaved system, the variation among 5-10 measurements should be 2°. This will signal not only the procedures are reproducible, but the property of the surface is homogeneous and uniform. 

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