Marking Permanency Test & Acetone Test Comments

Marking Permanency (using 3 parts Mineral Spirits and 1 part Alcohol) combined with an Acetone test for Blacktopping are two common methods to determine if a electronic components has been remarked.

It should be noted that if a component fails either of these test there is a high degree of probabality that the part in question is counterfeit.  There are cases and examples that we have witnessed where Component Manufacturers have blacktopped and remarked their product but these examples are very rare.

As a rule of thumb, any part that does not pass the marking permancy and acetone tests illustrated below should be considered suspect counterfeit.