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filter aid

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filter aid [′fil·tər ‚ād]
(materials)
An inert powder or granules such as diatomaceous earth, fly ash, or sand added to a solution that is to be filtered in order to form a porous bed on the filter and increase the rate and improve the quality of filtration.


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Tetratex is a surface filtration membrane, acting as a primary dust cake, requiring no dust cake to act as a filter aid, either before or during operation.
DE is used as a filter aid by roughly 98 percent of the beer industry today," he says.
Used with a red filter, the E2 will not spook deer, and a blue filter aids in following blood trails.
 
 
 
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