Scientists Conclude We Don’t Load Dishwashers Correctly

It’s all about the sprayer arms.

Daniel Wroclawski reviewed.com 1/19/15

We’ve got it all wrong folks. A new study in the Chemical Engineering Journal has discovered the best way to load a dishwasher, and we weren’t even close.

Digital Trends reports that it’s all about what’s on the dirty dishes, specifically proteins and carbohydrates. Dishes covered in carbs like pasta should be placed in a circle in the center of your dishwasher, following the rotating sprayer arms of the machine.

As for protein-covered dishes, they should stay along the edges of the dishwasher, where they can spend more time getting sudsed up. And don’t even think about overloading your dishwasher. This inhibits water flow in the machine, preventing dishes from getting clean.

It’s all about what’s on the dirty dishes, specifically proteins and carbohydrates.

The study was led by Dr. Raul Pérez-Mohedano of the University of Birmingham, but industry giants Whirlpool and Procter & Gamble also collaborated on the study, suggesting the research could ultimately benefit dishwasher design, as well as research into different kinds of detergent.

The study came to these conclusions using Positron Emission Particle Tracking, which sounds more like atom smashing, but it’s really just a way of tracking the motion of water inside the dishwasher. It’s a shame—atom smashing would be a much cooler way of cleaning dishes.

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