Met-L-Chek? is a provider of certified fluorescent and magnetic particle inspection materials.Our liquid penetrant and magnetic particle materials are certified to meet the requirements of AMS, ASTM, ASME, ISO, DoD specifications and trusted by Pratt & Whitney, General Electric, Rolls-Royce, Boeing, Consolidated Precision Products, Mistras, and Precision Castparts Corp. From the beginning, we have built our organization through a culture of customer service, product quality, and business integrity. Met-L-Chek? is a member of the McGean? family of companies.