This article contains the FAQs for the BL642UK Ninja® Blender Duo with Auto-IQ®.

How many RPMs?

Up to 20,000 rpm depending on attachment and program selected


Can you blend frozen fruit?

Yes, Ninja blades break down frozen ingredients in seconds

Can you grind coffee beans?

A coffee grinder attachment is available for Ninja Auto iQ products and this should be used to grind coffee beens.

How long is the cord?


How do I care for my Ninja?

Use a damp cloth to wipe the motor base clean. The cups, blade, and lids are dishwasher safe, and it is recommended to put everything on the top rack. You can also squeeze 2-3 drops of washing up liquid into the cup, fill halfway with warm water and pulse, 5-10 times. For easiest cleaning, rinse or clean the cups and blades immediately after use.


The Nutri Ninja cups and blades are also dishwasher safe. Use extreme caution when cleaning & handling the blades. Always store the blades attached to the cup or a safe area.

What is Nutrient & Vitamin Extraction?

The Nutri Ninja Pro can blend whole fruits, vegetables, greens, seeds & stems into Nutrient-rich beverages in seconds! Traditional juicers provide little juice and remove the pulp which contains the healthy fibre, whereas the Nutri Ninja Pro provides juicing with the benefits of entire fruits and vegetables, not just the juice. These juices are bursting with health-boosting vitamins, minerals, antioxidants, trace elements and plant nutrients!

*Extract a drink containing vitamins and nutrients from fruits and vegetables

What is Total Crushing Technology?

Total Crushing technology is a combination of Ninja’s Precision engineered blades and Auto iQ programs, which allow the blades to pulverise ice to snow for creamy frozen drinks and smoothies