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Chemistry Insights

Hydrophilic Emulsifier Concentration

Hydrophilic Emulsifier Concentration This subject comes up from time to time and it is time to discuss it again. The hydrophilic emulsifier is used in method D post emulsifiable penetrant inspection. It is supplied as a conce...

Chemistry Insights

Flash Point vs Auto-Ignition Temperature

We have often looked to other NDT practitioners for input for Penetrant Professor articles. In this case we are basing the article on the newsletter put out by two knowledgeable French friends, Patrick Dubosc and Pierre Chemi...

Chemistry Insights

Pesky Penetrant Contaminants

Pesky Penetrant Contaminants Although the major components of penetrant inspection products usually cause no problems with the metals with which they contact when used correctly, there are some minor contaminants that can cau...

Chemistry Insights

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