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- Posts: 347
- Joined: Mon Jul 30, 2018 11:58 pm
- Location: Louisville, KY
This will potentially be carrying hydrogen for GC-MS use, which I know can be extra picky about picking up contaminants.
I also need to carry helium(planning on a valve to switch between the two, plus the MS needs it to flush the source region during the solvent delay), argon for the collision cell in the MS, and methane or isobutane for CI.
I'm thinking of first of all rigging a solvent reservoir to force solvent-maybe pentane followed by methanol-through with nitrogen. I also see advice to dry by heating while purging with nitrogen. I don't know that i can do that easily. With that said, I have a 5890 sitting around mostly unused and currently with an injector not in use, and am thinking I can install the tubing in it as if it's a packed column(not connected to the detector) while flowing helium through. Does that sound viable? Is there anything you all would do differently?