I bought the dry grains container specifically to make flour from wheatberries. There are a lot of reasons to avoid store bought flour, and there are a lot of ways to make flour at home. I already had and adored the Vitamix, so I thought, why not add this to my arsenal? But immediately upon using the dry grains container for my wheatberries, I noticed that it started to look textured on the bottom third of the container. Look at the photo below. This texture is happening because as the grains knock into the inside walls of the container, they make tiny dents / chips in the plastic. I am nervous that microplastics are entering my food because of this. I am a loyal Vitamix user and always tell people to get a Vitamix 5200 as opposed to Ninja or other lesser blenders. The 32-ounce Dry Grains Container is the only thing that makes me pause and say, "...but there is this issue with the plastic pockmarking and potentially releasing plastic particles into your food." I don't have this problem with the regular container. For making flour from wheatberries, I do not recommend this product and instead would urge you to spend the money on a home mill, which I will be doing ASAP.

Excellent container I make my own flour very fast and fresh.

I really love that I can make flours out of wheat berries, tapioca pearls, rice, and lentils! I notice sometimes there are unblended wheat berries even after blending for 1 minute. I can't blend longer, or else the flour will get too hot and get wet w/ condensation.