3M™ Speedglas™ Auto Darkening Filter technology allows a welder's screen to go dark as quickly as milliseconds of the arc strike. March 13, 2015 . March 13, 2015 . Simple pathogen detection makes food safer. The 3M™ Molecular Detection System uses Isothermal DNA Amplifiion and Bioluminescence Detection to provide a simple means of detecting pathogens in food and .