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- Posts: 357
- Joined: Mon Jul 30, 2018 11:58 pm
- Location: Louisville, KY
MSCHemist wrote:
the 73's and 75's have nearly identical EI sources and Restek and others sell those parts.
When you get right down to it, I'm not sure if there's much real world difference between a 5973N with a fast scan sideboard and something like a 5975C. The gap gets even narrower if you can put the 3-axis detector in the 73, although I haven't looked into whether or not that's possible.
The 75 looks newer/fancier and of course does have the nice glass window on the front so you can see if the filament is on, but that's probably the major difference in them. It's almost like Agilent finally decided that the 5973 had enough incremental upgrades that the could justify calling it a new model.
I love my 75, but honestly if I walked in to work on Monday and the department chair said "We need another GC-MS-go get us a good deal on one" I'd probably opt for an optioned-up refurb 6890/5973(which, the last time I asked back last summer, could be had for ~$35-40K) over a 7820/5975 or an 88xx/5977.