The Chemex Bonded Circle Filters are suitable for the 6 cup and 10 cup Chemex carafes and come in packs of 100 filters. The filters are oxygen cleansed, which is a bleach-free process, ensuring no chemical residue or taste can be transferred from the filter. They are also designed with a cone shape unique to the Chemex, offer better filtration for a more refined brew. Using the bonded filters with your Chemex ensures a pure flavour through uniform extraction. The filters are 20-30% thicker than other filters, catching more of the bitter elements, oils and sediment that would otherwise end up in your cup. The Chemex Bonded Circle Filters are packed pre-folded, meaning the brewer only has to open the filter with three layers to one side and place this against the spout side of the Chemex. The Chemex was designed in 1941 by chemist and inventor, Peter Schlumbohm. Since then the company has expanded to include more products, but the Chemex design has remained popular and unchanged since its inception. The Chemex Bonded Circle Filters are scientifically designed to produce an exceptionally refined and light coffee, that can be enjoyed simply as it is!