Leaks

Today I discovered that even very experienced technicians do not necessarily know not to mix ferrules and tube fittings from different manufacturers. This was the cause of (at least some of) the leaks. The leaks caused the cylinder of helium to empty too fast, which meant I had to close the cylinder when I wasn't using it, which meant that I had to shut down the GC-MS when I wasn't using it, which meant that it wasn't ready for use, which meant that it wasn't used as often as it could have been.