There are 4 different filters used for coffeemakers size 6 cup and larger.  We have two pre-folded squares, the FS-100 filter and the FSU-100 filter. A pre-folded white circle called the FC-100 and an unfolded white circle called the FP-1.  They all function in the same manner, it just comes down to personal preference which one will be used. Some people like the points on the square filters for easy removal. Some prefer to have the top of the filter more flush with the carafe, and some prefer to fold their own. These 4 filters will all be opened the same way. 

Using your finger, open the cone with your finger so that 3 leaves of the filter are to one side, place that side against the spout when putting it into the carafe. 

Again, we do this so that there is more stability of the filter towards the spout to help prevent vacuum sealing. You are now ready to place your coffee grounds in the filter and begin brewing. Be sure that you are using a medium coarse grind, this will prevent the filter from clogging and slowing the flow rate. 

View our videos using the below links:

How to use CHEMEX Bonded™ Filters

How to fold the CHEMEX® FP-2 Filter

How to fold the CHEMEX® FP-1 Filter

CHEMEX® Bonded filters are designed to function like laboratory paper, removing bad fats, bitterness, acidity, and sediments that other types of filters leave behind.  By filtering these undesirable elements out, you will brew an incredibly flavorful and clean cup of coffee. Our paper is made with virgin pine wood pulp and is a gorgeous, heavy weight and texture. The white paper is oxygen cleansed using a bleach-free process, ensuring no chemical residue or taste is imparted to the filter.

Our compostable filter paper is USA-made from North American materials only. All our paper pulp suppliers are Forest Stewardship Council® certified, adhering to responsible, sustainable practices. Just brew & discard, no baskets to empty or clean.

CHEMEX® Corp has been family owned and operated for over 45 years. At our factory in Massachusetts, we inspect, polish and assemble the coffeemakers and convert and produce every filter.

View our in-house Filter Conversion process here.

CHEMEX Bonded™ Filters not only eliminate unwanted fats and sediment from your coffee, but they also facilitate easy cleanup. After brewing, simply remove them from your CHEMEX coffee maker and dispose of them. These filters are compostable, allowing you to give back to the earth. Maximize the benefits of the CHEMEX Bonded™ Filters by following the proper disposal method for a hassle-free cleanup process.

What is the difference between the white and brown filter paper?

All the filters will function in the same way, it just comes down to personal preference for which you choose.  The white filter paper goes through an oxygen cleansing bath followed by a series of hot water baths.  The brown filter paper goes through only the hot water baths, retaining the “natural” wood color.  We don’t use any bleach or chemicals in our filter paper.  They are both compostable.   

Why are some filters Pre-folded and others not?

All the filters will function in the same way, it just comes down to personal preference for which you choose.  The “halfmoon filters” (itemcodes FP-2, FP-2N) for the 3 cup and Funnex do not come pre folded due to their design and size.  We offer pre-folded circles and squares for your convenience.  However, some people prefer to fold their own circles and therefore we also offer the Un-folded filter circle (item code FP-1).

Why are some of the filters circles and some squares?

All the filters will function in the same way, it just comes down to personal preference for which you choose.  Some people like the points on the square filters for easy removal, while others prefer to have the top of the filter flusher with the carafe. The FP-2 and FP-2N filters are a “halfmoon” in order to fit into the 15 ounce brewers.