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Don't think I need an outside lab, .... but would be interested in discuss with those actually having analytical equipment.
(? I still need a few minor parts for my pe Elan 6000,? so that is not ready yet,? lol.? And yes, I would need a different column for the Shimadzu, sigh. )
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But, am betting that this ink issue can be solved more easily:
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My next practical step, after having tried some TLC plates, will be to try one of the inexpensive Sephadex columns,
Will start with either G-10 or G-25, and then possibly proceed forward, with a more specific column.
