"Chromatography is the term used to describe a separation technique in which a mobile phase carrying a mixture is caused to move in contact with a selectively absorbent stationary phase."
Respected Madam, I think not the absorbent but it should be adsorbent stationary phase in the first slide of presentation.
There are number of corrections required in the presentation of this column chromatography.
My purpose is not to criticise you but have interaction to improve our knowledge.
Kindly run one column chromatography experiment for B. Pharm practicals. The simple one separatio of plant pigments using column chromatography. You will find number of clues from practical.
I had prepared some of the videos on Chromatography.
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Video : Introduction to chromatography :
Video: Classification to chromatography:
Video: Introduction to HPTLC:
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Hope to have interaction related to chromatography.