Profile: Mass Technology Corporation is a national provider of precision leak measurement for above (AST) and underground (UST) fluid storage tanks. Our mass measurement system is applicable to all types & sizes of tanks and viscous products and it is more precise than conventional testing methods. Our conventional leak detection methods require content removal, cleaning and physical inspection. Ultrasonic testing is a spot testing procedure and gives an evaluation of the spots tested. Several methods are currently available and that includes vacuum box testing, magnetic floor scanning, gas detection and hydrotesting.