Recommendation of column type

Hi, I using the HPLC to detect and quantify various medium compounds and metabolites in E.coli and P. pastoris supernatants. Now I'm using the Aminex HPX-87H column 300 x 7.8 mm, it's fine but I want to try another one there is someone have some recommendation? maybe have a better resolution or work with a higher pressure limit ?

Thanks! Slight smile

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