Chemex
Chemex Pre-Folded Square Filter
Best choice for pour-over enthusiasts seeking a clean, sediment-free cup.
Experience the pure flavor of coffee with Chemex Bonded Filters. These pre-folded square filters are designed to remove even the finest sediment, undesirable oils, and fats, ensuring a rich taste without bitterness. The cone shape promotes uniform extraction by regulating the filtration rate for optimal infusion. Made from thicker paper than competitors, these filters are guaranteed not to burst or break. They are compostable, biodegradable, and manufactured in the USA using responsibly harvested materials. Perfect for all roasts and even tea, these filters help you brew the perfect cup every time.
$8.90
Owner Satisfaction
4.5
/ 5
Category Rank
112
/ 337
#112 in Coffee Filters
Price vs Category Average
-50%
Below average
Who it's for
- Coffee purists seeking a crisp, sediment-free cup
- Busy morning brewers wanting a seamless, ready-to-use setup
- Batch brewers needing reliable, tear-resistant paper strength
Who should skip it
- Budget-conscious drinkers prioritizing low daily brewing costs
- Impatient brewers who prefer a faster, high-flow extraction
- Home baristas using standard cone or flat-bottom drippers
Performance breakdown
Sediment Filtration
Thicker paper stock effectively traps even the finest coffee silt.
Extraction Uniformity
Cone geometry promotes consistent water flow for balanced, clean flavor profiles.
Structural Integrity
Heavy-duty construction prevents tearing or bursting during the brewing process.
Ease of Use
Pre-folded design saves time and ensures a perfect fit every morning.
Flavor Neutrality
Oxygen-cleansing process eliminates paper taste for a pure, clean cup.
Environmental Impact
Compostable, biodegradable materials support a sustainable daily brewing routine.
Key Specs
100 filters per pack
Made in the USA
MPN
FS-100
Material
Paper
Filter Type
Cone
Compostable and biodegradable
Model Number
FS-100
Fits all CHEMEX® Coffeemakers except for specific models (CM-1C, CM-1, CM-1GH, CM-FNX).
Features
- Cone-shape ensures uniform extraction for pure coffee flavor.
- Thicker filters (20-30% more than the competition).
- Pre-folded for convenience.
- Works well with all types of roasts- even tea!
- Manufactured in the USA using responsibly harvested materials.
- Compostable and biodegradable.
- Guaranteed not to burst or break during filtration.
- Removes undesirable elements from the coffee.
- Oxygen cleansing is a bleach-free process.
What customers say
These Chemex filters are essential for achieving the signature clean, sediment free coffee Chemex brewers offer. Users consistently praise the thick paper for its superior filtration, which removes bitter oils and fine grounds, resulting in a remarkably smooth and bright brew. The prefolded design adds welcome convenience, ensuring a perfect fit every time. Quality is reliable; the filters deliver the desired taste profile without imparting any papery flavor when rinsed properly. While slightly more expensive than standard filters, customers agree the enhanced taste and brew quality fully justify the investment. These filters are viewed as integral to the unique Chemex method, fostering deep satisfaction among dedicated users.
Know before you buy
These filters fit almost all Chemex models, with the exception of the CM-1C, CM-1, CM-1GH, and CM-FNX series.
The paper is 20-30% thicker than standard filters to ensure they do not burst or break during the brewing process. This extra thickness also helps remove more sediment and undesirable oils for a cleaner cup.
No, these filters are processed using an oxygen-cleansing method, which is a completely bleach-free way to sanitize the paper.
Yes, their design is versatile enough to be used for brewing tea as well as coffee, regardless of the roast profile.
Yes, they are made from responsibly harvested materials in the USA and are both compostable and biodegradable.
While not strictly required, rinsing the filter with hot water after placing it in the Chemex is a common practice to remove any residual paper taste and to pre-heat your glass carafe.
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$9