Met-L-Chek Company has been manufacturing a complete line of Nondestructive Testing Materials since 1952. Met-L-Chek Company supplies fluorescent and visible dye penetrants, wet and dry magnetic particles and a variety of specialty testing materials. All Met-L-Chek Company products are designed to yield maximum value through quality, cost, and usability. Met-L-Chek Company products are sold under the Met-L-Chek® and Pen-Chek® trademarks. Met-L-Chek Company fluorescent penetrant materials are approved to and listed on the qualified products list (QPL) for AMS-2644 and meet the requirements for use to AMS-2647 for aerospace inspection.

Met-L-Chek Company visible inspection penetrant materials meet the requirements for nuclear component inspection. Met-L-Chek Company products are manufactured under license in The Netherlands by NDT Europa.