Designed for testing electrosurgical instruments, the low frequency high voltage Insulation Tester is used to detect and locate defects such as pinholes, cracks and bare spots in the jacket or coating of laparoscopic and bi-polar electrosurgical instruments. Compromised insulation can lead to patient burns during electrosurgical instrument procedures. The Insulation Tester is a handheld, portable unit that tests the insulation integrity of electrosurgical equipment for flaws in protective coatings applied over conductive instrument surfaces.