I saw some papers with colorful solvents for some application. Especially, for wetteblity test. I also intertsed to do that. Where and what type days shall I search? Thanks
Check these out:
DOI:10.1016/j.ijleo.2018.06.064
DOI: 10.1016/j.cis.2015.02.006
Dear Wondimagegne A Mo , If you do a wettability test with an instrument that has a camera with white or blue light falling through a color may not help to distinquish the droplet you need to make to determine parameters like a contact angle etc. It also depends on which liquids you want to use. As a guide have a look at fuel dyes (dyes added in some countries to distinguish between regular fuel (uncolored) and that to be used in industry/agriculture (colored). Check out this link
https://en.wikipedia.org/wiki/Fuel_dyes
for what dyes are used. They are normally abundant and cheap.
Kind regards, Leo
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