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Thursday, June 20, 2013

The teflon film test


 This is a test fo purity of water.If water  in the drop is not pure, its contact angle over Teflon surface will be less than 110 degree.
This can be a student project: Can we check the purity of milk and muster oil using this non destructive technique ?
Reference :
1. www.uweb.engr.washington.edu/education/pdf/ASHsurfscontact angles05.pdf

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