The TSI Respirator Leak Tester helps you perform fast, easy, after-maintenance leak tests on full-face, air-purifying respirators. With this respirator leak tester accessory, you can use your Model 8127 or 8130 Automated Filter Tester to challenge a respirator with test aerosol. Simply mount the respirator on the head form and scan the respirator with the hand-held probe. Test critical areas like eye-lens seals and exhaust valves. If the aerosol concentration inside the mask exceeds a preset level, audible and visual alarms will be triggered.