Feb 9, 2009|

Susie from Chatham Area Public Library

Dear Dr. Brew,

The Chatham Area Public Library District recently purchased some Bunn-O-Matic equipment. We were recently trained on using the Twin Airpot Brewer. The Library will be purchasing and using pre-packaged coffee. However, we will be having community groups using the brewer with their own coffee. (One of your staff) suggested that we use 3.25 ounces of coffee to make the perfect pot of coffee. What does this figure relate to in cups?

Thank you,



Thanks for your question. The finished volume in the airpot is dependent on the set volume of water sprayed over the ground coffee, minus the absorption rate of the ground coffee. As an example -- with the volume set at 64 ounces of water dispensed and 3.25 ounces of ground coffee, the finished volume would be approximately 55 ounces of beverage. Ground coffee absorbs approximately 2 ounces of water per ounce of coffee weight. From this example, the number of cups/ servings would be eleven, 5 ounce servings.

Happy Brewing,
Dr. Brew


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