What is the best ASTM standard for hydrophobicity and hydrophilicity?

20 September 2014 1 9K Report

Is there a method to test the hydrophobicity and hydrophilicity of a solid (biochar) that is a standard? I cannot seem to find anything. If anyone has a solution for me I would truly appreciate the help.

Yy Ka

Dear Santana,

there is standard tests for measuring the Hydrophobicity. Static and Dynamic Contact angles also you could use for get an Idea about the Hydrophobicity.

This is the Standard Method.

ASTM F21 - 14

Standard Test Method for Hydrophobic Surface Films by the Atomizer Test.

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