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What are open tubular columns and give some differences between open tubular column and packed column

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Chemistry

What are open tubular columns and give somedifferences between open tubular column and packed column

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There are two general types of column packed and capillary also known as open tubular Packed columns contain a finely divided inert solid support material commonly based on diatomaceous earth coated with liquid stationary phase Most packed columns are 15 10m in length and have an internal diameter of 2 4mm Capillary columns have an internal diameter of a few tenths of a millimeter They can be one of two types wallcoated open tubular WCOT or supportcoated open tubular SCOT    See Answer
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