The purpose of this test is to verify part marking validity of the electronic component part when subjected to solvents. Non permanent markings have been seen as seen in many cases in the growing epidemic of counterfeit components. Various Military Standard procedures are used which incorporate processes of working with several chemicals mixed appropriately and in detail in accordance with the specifications. These chemicals consist of Aliphatic alcohol, mineral spirits, ethyl-benzene, organic solvents, de-ionized water, propylene glycol monomethyl either, or monoethanloamine.

“This has been a very successful process in uncovering non authentic marking on ceramic package electronic components as well as certain plastic, can or glassivated component package devices” said NJMET VP Joseph Federico headquartered in Clifton, NJ.

Once properly mixed the components are submerged in a three phase process and analyzed in accordance with MIL-HBK-130 to uncover evidence of damage to the device and/or any specified markings which are missing in whole or in part, faded, smeared, blurred, or shifted (dislodged). To the extent that they cannot be readily identified from a distance of at least 15.0cm (6inches) with normal room lighting and without the aid of magnification or with a viewer having a magnification no greater than 3X shall constitute a failure.

For more information on Marking Permanency (Resistance to Solvents) Testing, please call Joseph Federico at NJMET Clifton, NJ at (973) 546-5393. Please visit NJMET at


NJMET is a pioneer in the electronic component testing industryand has served the Military, Commercial, Aerospace, Industrial, and Automotive fields, providing worldwide quality electronic component/product testing for over 30 years.