Only the material number was reported whereas the affected instrument was discarded.Even after additional correspondence with the local staff, neither a lot number nor an event date could be obtained.An investigation with regards to the reported complaint event could therefore not be performed.During the manufacturing process, every lot is tested by predefined specifications in the in-process and final inspections.During final inspection, each instrument is tested for air tightness by means of a helium leak test and a pressure test.
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