A column used in column chromatography?

Answer:
Column is here used to designate a vertical format, as with newspapers columns. it would be a strip of test paper used in conjunction with a test tube. how far up the solution would precipitate and make color patterns determines the test. Chromotogaphy was invented by the Russian scientist, Michael Tswett in l906. It is a direct fore-runner of color photography, which could not have been developed without it- sine qua non.
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