Thanks to the maintenance-free, brushless fan, the VACUUM PLATE 100-LP is very quiet. The cordless Leister vacuum testing device was specially developed for testing welding work on roofs, in swimming pools and for gardening work. The low negative pressure virtually eliminates damage to the usually thin diaphragms. It can also be repositioned without having to be switched off. This saves users time and energy and enables them to work efficiently. Thanks to the battery operation of the VACUUM PLATE 100-LP, users have maximum freedom of movement and working is safe and easy. Cables, tangled cables and tripping hazards are a thing of the past thanks to the rechargeable battery. Another advantage is that the vacuum remains constant regardless of the battery charge level. This ensures reliable and precise testing of the weld seam. The VACUUM PLATE 100-LP is supplied with two universal rechargeable batteries including charger (18 V/4 Ah) in a small, practical plastic case. This means that everything stays together and can be transported safely. Leister has additional testing devices for testing the weld seams of thicker geomembranes that are laid for sealing in civil engineering (landfills, mines, tunnels, etc.): VACUUM PLATE 300, VACUUM PUMP, VACUUM BOX, VACUUM BELL, EXAMO 100, EXAMO 300F USB, EXAMO 600 F USB, COUPON CUTTER 500, weld seam tester and test needle.