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Why is it better to filter under vacuum pressure? watch

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    I was wondering why it is better to filter a substance under vacuum pressure instead of normal filter paper? i.e. what are the advantages of using vacuum pressure to filter a substance?
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    (Original post by Ajem)
    I was wondering why it is better to filter a substance under vacuum pressure instead of normal filter paper? i.e. what are the advantages of using vacuum pressure to filter a substance?
    Well it makes the filtration process happen a lot faster. I've only used it twice but the liquid is sucked out almost immediately
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    Because if you can create a positive pressure differential between the substance on one side of a membrane and the other (you can either pressurize your raw substance or create a partial vacuum on the other side of the filter) - you can increase the rate of which the substance will be filtered.
 
 
 
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