Leak test set (300) for checking the tightness and / or strength of pipe and / or hose systems (100) for fire detection suction devices (103), wherein the pipe and / or hose system (100) one or more suction openings (105) for fluidically connecting a Internal volume (106) of the pipe and / or hose system (100) having a monitoring area (200), with a connection adapter (310) for connecting the Dichtheitsprüfsets (300) to an output (101) of the pipe and / or hose system ( 100), - a pressure generating means (320) for generating a pressure difference between the inner volume (106) of the pipe and / or hose system (100) and the monitoring area (200) and a leak test unit (330) for measuring the pressure difference between the inner volume ( 106) of the pipe and / or hose system (100) and the monitoring area (200) and / or for measuring a pressure loss with respect to an internal volume (106) n internal pressure, characterized by one or more test seals (340), which are suitable for fluid-tight sealing of the one or more suction openings (105) relative to the monitoring area (200).
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