X-R-I Testing, NDT Testing Experts
Acid Etching, Passivation, Cleaning and Inspection




Pre Penetrant Etch

Pre Penetrant Etch, also known as “material smearing”, refers to a non-destructive inspection process that lightly removes a very fine layer of the material in question to allow for inspection. The process includes adding either a caustic solution or acid to a material, removing around 0.0001” to 0.0002” of the surface. The inspector then evaluates the grain structure of the material for any problems that may have been previously masked.

At XRI Testing, we offer pre penetrant etching and other non-destructive testing services with competitive pricing and quick turnaround. Backed over 75 years of industry experience across a wide variety of applications including aerospace and defense, XRI Testing has the capabilities and expertise to handle your unique project. Contact us today to see what we can offer you.

For information on these services, view our Chemical Process Specs.



Acid Etch NDT inspection
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