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DIY Chromatograph

Posted: Thu Apr 02, 2020 1:19 am
by marcusviniciusufsj
Hello everybody.
I would love to use an Arduino module to build a chromatography system.
It could be liquid or gas chromatography, I just want to be able to use it in my university's laboratory.
I've been researching some basic systems and I can't decide if I use arduino sensors and assemble the whole system with arduino parts (I don't think it would be so accurate and reliable)
Or you could use old chromatography equipment modules and integrate them using arduino. the problem is that they are very expensive and unfortunately me and Brazilian science are not in excellent financial condition to purchase the modules.
I don't know if there are specific sites for old scientific equipment with better prices than ebay, do you know?
Can you help me with any tips?

Re: DIY Chromatograph

Posted: Thu Apr 02, 2020 10:24 am
by janoshik
You can build a functioning system off ebay parts for under 100$.

I purchased a modern Shimadzu LC-20AD pump with broken covers for 40$, 2 broken (different parts broken) rheodyne injectors for 10 and 15$ and made a single one functioning out of it and fluorescence detector for 3$ (auction starting at 1$).

I made a proper functioning HPLC system for my application out of that.
Pity my app. required 2000$ column...

Spend your time on ebay and you'll find real gems.