Ratio Kone Coffee Filter by Able
Since 2015 we have collaborated with Able on a custom Kone permanent filter for the Ratio Eight, designed specifically to optimize extraction of a full batch of coffee (40 ounces). Able has continued to refine the design of the Kone, and in 2020 released a new version. The new Kone brews better, is easier to clean and more durable than ever.
Never make a desperate Saturday morning run to the grocery store for paper filters again!
The Kone's design features square-to-round holes, graduated-density hole pattern, and a polished mirror finish. This combination improves water flow and keeps sediment from passing through the filter for better extraction and more consistent flavor.
Easy to clean.
Made from a single piece of stainless steel, the new Kone traps fewer oils and grounds making clean up easier than ever. With no additional layers for particles to become trapped, your coffee will keep tasting good day after day.
Durable for everyday use.
The reusable filter is designed with a high precision seam to keep a tight, durable seal that holds up to daily use. The plastic ring around the filter maintains the Kone's shape and is made from certified food-safe plastic.
Perfect for pour over.
The Kone is used and loved by both coffee professionals and enthusiasts alike. Its forgiving design makes brewing pourover approachable whether you're making a single cup or a larger batch.