This famous beaker-like vessel changed America's way of thinking about coffee-making. Invented by chemist Peter Schlumbohm and featured in the Museum's collection, the Chemex Coffee Maker has been lauded for its simple, sleek design. Its chemically correct method of brewing is thanks to its hourglass-shaped flask made entirely of glass, a chemically inert material that doesn't absorb odors or chemical residues. To brew, put coffee into the Chemex bonded filter (sold separately) and add hot water to make up to eight cups of coffee. Mouth-blown from heat-resistant glass with a wooden handle. Dishwasher and microwave-safe. Set of 100 filters sold separately.