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Step 9First filtering to remove most carbon particles
Now place one coffee filter in the strainer and begin pouring your solution into it. Be careful not to overfill the filter - if some of the solution overflows the filter, you'll have that much more residual carbon to remove later. (It's not terribly important for this step, but will become extremely important in the next two filtering steps.)
After two or three fills of the filter, you'll notice the solution taking longer and longer to flow through the filter. When it slows noticeably, stop adding solution, pour the solution remaining in the filter back into the unfiltered container if you wish, and discard and replace the filter.
Continue until all solution has been filtered once.
After two or three fills of the filter, you'll notice the solution taking longer and longer to flow through the filter. When it slows noticeably, stop adding solution, pour the solution remaining in the filter back into the unfiltered container if you wish, and discard and replace the filter.
Continue until all solution has been filtered once.
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