These filters are great for filtering my recent perfumes and perfume tinctures. I took off a star because the ash content is not listed on the packaging and I emailed the seller about the ash content and received no response. Otherwise it's great. They are bigger than I thought which is great. They are good in terms of strength as long as you are gentle with them. I filter my creations through an unbleached coffee filter first, then I put one of them in the funnel and filter again. It's a little slow but gets the job done.
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