Invented in 1941 by Peter Schlumbohm, Ph.D. in chemistry at the University of Berlin, Germany, the Chemex Classic Pour-Over Coffee Maker is a glass-container coffee-making utensil that has been manufactured by Chemex in Massachusetts for many years. Chemex's product is relatively simple, with only an integrated drip coffee pot, and it is also one of the few brands that has a place in the coffee world with a single product. This one-piece drip filter design was later imitated by many brands, but it could not replace Chemex's position in the hearts of coffee fans.
 
As part of the collection of the Museum of Modern Art in New York, Chemex is unique in its integrated bowl and bottom jug, with a glass funnel in the upper half and an Erlenmeyer flask in the lower half, a circular wood in the neck as an anti-scald handle, a delicate leather rope and a groove in the body for exhausting and directing the coffee when pouring out. The pour-over pot has a variety of specifications to choose from, the maximum size is 10 cups, the minimum size is three cups, the price is close to 300 yuan, consumers can choose according to their daily brewing amount.
 
The Chemex pour-over pot must be used with a dedicated filter paper to complement each other, which is at least 20% thicker than the usual model, so the drip rate is significantly slower. One of the highlights of Chemex is the thick, high-quality filter paper, which makes the coffee taste cleaner, and the price of a single sheet is close to 1 yuan, which is about twice as expensive as ordinary filter paper. In order to avoid over-extraction, it is advisable to use the single-shot method, where the particle size of the ground coffee must be slightly coarser than that of filter coffee, and the rate of water injection must be appropriate.