Ninja Master Prep QB900 Review

Ninja Master Prep with Patented Blade Technology


Unique design crushes ice, blends smoothies and chops veggies well. In lieu of the traditional blender setup with blades at the bottom of the jar, Ninjas have a post full of blades running lengthwise through the jar and included chopping bowl. The motor sits on top of the unit.

Good Housekeeping testers praise the way it works. “It excelled at grinding coffee beans and chopping up onions; it also whipped up a great smoothie,” they write. “The small and versatile Euro-Pro Ninja Master Prep blender can be depended on for all-around good performance.”

Ninja heavily advertises the Master Prep’s ice-pulverizing prowess, and many owners say it really is a champ with ice cubes. However, Mariette Mifflin,’s guide to housewares, finds ice crushing with the Ninja a pain. “Yes, it does make snow, but I found it tedious and it usually required more than one try,” she says. She had to hold down the motor housing firmly while pulsing, or it would bounce off the pitcher requiring reassembly. “On the other hand, blending drinks with both ice and liquid were the easiest, creamiest and best … it does blend a super creamy iced coffee.” She likes the chopper part even better: “It has lots of power to cut cleanly, especially noticeable with celery.”

Smoothies get mixed reviews. Mifflin — like some owners — says the Ninja Master Prep fails to purée some ingredients (like bananas) finely enough to drink through a straw. One Amazon customer writes that after manually holding the lid while blending, the resulting smoothie was still chunky. But others disagree.

“I’ve used this blender every single day for the past 6 months and it’s just awesome,” says one owner at “I make myself a smoothie every single morning (frozen strawberries, orange juice, yogurt, one banana, honey) and it hasn’t broken down on me, gotten stuck, or not blended my drink all the way.”

Another says, “I can make my refried beans, chop onions and garlic, smoothies and sauces.”

Ease of use

Dishwasher-safe, but difficult to clean if washing by hand. The Ninja Master Prep QB900 comes with a 48-ounce blending pitcher and 16-ounce chopping bowl (both BPA-free plastic), plus storage lids for both. Good Housekeeping likes that the pitcher can be positioned for right- or left-hand use and that all parts (except for the motor housing) can go in the dishwasher.

If you don’t have a dishwasher, though, reviewers say you will have problems. “This thing has an absurd amount of horribly engineered nooks and crannies on its top, AND there’s a section which you will never, ever be able to properly clean because it is recessed inside,” says one reviewer. “Within a few months you’ll have a nice fuzzy colony of bacteria in there.” Food can accumulate on the blade axle, too, other owners say, “so be careful when unscrewing the incredibly sharp blades to clean the axle.”

About those sharp blades: “My first day with it, I sliced my thumb almost to the bone!” says one owner at “To clean the blades … your fingers [get] hazardously close to the blades, just asking for your fingers to be sliced and diced.”

The Ninja has one speed, and you have to press the On button the entire time you’re blending. Good Housekeeping editors — and some owners consider this a con. “The whole design is very awkward to use,” says one user. “You can’t turn it on and walk away … And when you want to add something else to the mix, first you remove the motor, then you remove the lid, and finally add your ingredient only to do it all over again when you want to adjust the taste again.”


Lots of parts to keep track of. “Right out of the box, the Ninja food processor and blender is bigger and more impressive than expected,” says Mifflin at “Made of quality plastics, the Ninja food processor seems very durable.”

The Ninja is mostly plastic — a colored plastic motor housing atop a clear plastic pitcher and chopping bowl. It’s not heavy or bulky, but “there are lots of small parts to store,” Good Housekeeping testers say. And, an owner adds that the parts don’t nest. There’s no cord storage, either, bringing the Ninja’s overall Good Housekeeping grade down to a B+.


Ninja’s plastic parts seem durable, but there are few long-term reviews to confirm. We didn’t find many long-term reviews for the Ninja Master Prep QB900, but some owners say it has worked fine for six months or longer. Still, others say the plastic parts break, or the blades grind into the plastic pitcher or lid.

“It broke after two months,” says one owner at “The long blade shaft snapped one inch below where it attaches to the motor. I was surprised to see it was partially hollow plastic!”


A quiet blender. Good Housekeeping testers find the Ninja Master Prep “very quiet during use.” Owner reviews largely back that up.

“I used it for the 1st time this morning and it made the perfect smoothie in 10 seconds! And no one complained about the noise!” says a 5-star review at Several other owners at the site and at agree, and only one describes it as loud: “an inadvertent alarm clock for others in the apartment”.

The bottom line

Its plastic parts aren’t indestructible, but reviews say the Ninja Master Prep QB900 is pretty impressive — for a cheap blender. Still, the slightly pricier Ninja Master Prep Pro QB1004 (*Est. $65) strikes reviewers as more powerful and easier to clean, and it’s our top-rated budget pick.

10 Total Score

  • Includes a blending pitcher and chopping bowl
  • Dishwasher-safe
  • Quiet
  • Plastic parts may break quickly
  • Dangerously sharp blades
  • Difficult to clean without a dishwasher
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Ninja Master Prep QB900 Review
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