Advertisement

Has anyone stacked vertically GC's ?

Discussions about GC and other "gas phase" separation techniques.

6 posts Page 1 of 1
Due to severe lack of bench space due to a large variety of instrumentation, I am thinking of stacking two 5890s on top of each other (the top one standing on a wall shelf of course-not directly onto the other 5890), leaving enough space (5-7 inches) between them to be able to inject samples. Besides the obvious difficulties of having to climb a couple of steps to inject the top one etc, can you think of a good reason of why one should NOT do that?

Has anyone actually tried it?
Sounds like you're not running autosamplers but my first through would be that when your lower GC will be venting hot air which will then rise up to your upper GC. If your upper GC is trying to cool at that time then you are going to have problems.

On the whole I have to say that it doesn't sound like a good idea on the whole. There will be difficulties doing maintenance as well as safety aspects.

Rich
"Can't be king of the world
if you're slave to the grind"
Hit your boss up for more space and autosamplers, tell him it will increase efficiency and be an actual cost savings.

In many cases one GC with an autosampler can provide more throughput than two using manual injection. Sure, sometimes a column must go to higher temperatures than his little friend sharing the same column oven can handle.....
Tell you boss that if you stack the GCs then the chemist injecting into the upper GC must be sitting on your shoulders when he does it. :P

See if he gets the drift of the joke. The idea to stack GCs is of the same gender.

best wishes,

Rod
Thanks for the input guys. So your verdict is no, I agree with what you say.
As a GC supplier our solution would be buy two of our new GCs, a Bruker 430 will take about half the space of a 5890 :)
For balance so will a 6850, other suppliers may also have systems to offer :wink:
6 posts Page 1 of 1

Who is online

In total there are 38 users online :: 0 registered, 0 hidden and 38 guests (based on users active over the past 5 minutes)
Most users ever online was 5108 on Wed Nov 05, 2025 8:51 pm

Users browsing this forum: No registered users and 38 guests

Latest Blog Posts from Separation Science

Separation Science offers free learning from the experts covering methods, applications, webinars, eSeminars, videos, tutorials for users of liquid chromatography, gas chromatography, mass spectrometry, sample preparation and related analytical techniques.

Subscribe to our eNewsletter with daily, weekly or monthly updates: Food & Beverage, Environmental, (Bio)Pharmaceutical, Bioclinical, Liquid Chromatography, Gas Chromatography and Mass Spectrometry.

Liquid Chromatography

Gas Chromatography

Mass Spectrometry