how will you know that drug in percolator is exhausted
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Answer:
Drug power is divided into 4 to 5 parts.
First part extracted as simple percolation.
Percolate used as menstruate for second part.
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The drug is precolator is exhausted when the following things takes place
* The drug should occupy 2/3rd capacity of the precolator .
* First part extracted as a simple precolation
* precolation is completed as usual until the drug gets exhausted.
* Increase the surface area of the drug exposed to the menstrumm.
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