Chemex Filter

Yes, Chemex filters are significantly thicker—about 20-30% more than standard paper filters. This extra density is intentional; it traps more of the coffee's natural oils and fine sediment, resulting in a cleaner, brighter cup that highlights the coffee's acidity and flavor notes.

While they are designed specifically for Chemex pour-over brewers, they will fit most cone-shaped filter baskets. However, because the paper is thicker, your brew time may be slightly longer, so you might need to adjust your grind size to be a bit coarser to compensate.

It is highly recommended. Rinsing the filter with hot water before adding your coffee grounds serves two purposes: it removes any lingering paper taste and pre-heats your brewer, which helps maintain a consistent temperature during the extraction process.

These specific filters are unbleached. This means they are processed without chlorine, which some coffee enthusiasts prefer to avoid for a more natural brewing experience.

The shape is determined by the size and style of your Chemex brewer. The square filters are designed to be folded into a cone for the classic Chemex models, while the half-moon filters are pre-shaped for specific smaller or different-style brewers. Always check your brewer's requirements to ensure you choose the correct shape.