Our convenience tests look at how easy it is to set timers, fill the reservoir, clean the machine, and more. We determine concentration using a refractometer, a device that measures the amount of coffee dissolved in each brew. In CR’s lab, our brew-performance tests measure the brew temperature and contact time (how long water stays within the sweet spot of 195° F to 205° F for brewing). Brewing aside, we also test for handling and convenience, so you can choose a model that helps you sail through the most chaotic of mornings. Each drip coffee maker we rate brews roughly 65 cups by the time our engineers are through with it. Our ratings of drip coffee makers range from machines that offer simple programming to elaborate designs with built-in coffee grinders and self-clean cycles. “In general, for a higher price you can get add-ons like a water filter, clean cycle, clean indicator, permanent filter, or thermal carafe.” “Consider what features are important to you,” says CR test engineer Ginny Lui. In doing so, we’ve found that they’re definitely not all the same when it comes to performance-and a high price isn’t necessarily an indicator of great coffee. We rigorously test more than a hundred models in our labs alone. There’s no shortage of drip coffee makers on the market today.
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