• Chopping: This model had Very Good performance in our chopping tests of almonds and onions.
• Pureeing: This model had Good performance in our pureeing tests of peas and carrots.
• Grating: This model had Excellent performance in our grating test of parmesan cheese.
• Noise: This model had Very Good performance in our noise test using a sound meter to measure decibels.

The Ninja Master Prep Professional QB1004 is part of the Food processors & choppers test program at Consumer Reports. In our lab tests, Food choppers models like the Master Prep Professional QB1004 are rated on multiple criteria, such as those listed below.

Chopping: We judged each model's proficiency at chopping onions, and almonds.

Pureeing: We judged each model's proficiency at puréeing peas and carrots.

Grating: We judged each model's proficiency at grating parmesan cheese.