Chromatography Forum

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

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.

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