How to get Isopure to dissolve?

[Bon Appetit 41]

I so disappointed! I spent $50.00 on unflavored Isopure powder with the intention of mixing it with a chicken broth. It doesn't want to dissolve. The day before I bought a sampler pack of bone Protein? and it dissolved fine. I guess I should have bought a big container of that but I went with Isopure (is whey protein not bone) since he didn't have any carbs at all. Does anybody know how to get this powder to dissolve in hot liquids? I've tried to stir it as soon as I put it in a liquid. I've tried mixing it in the single serve blender(watch out it expands in volume by 4). But it still has significant grit.

[Bon Appetit 41]

Never mind I went to their website, where they admit there are minerals that don't dissolve.

[blizair09 3,250]

Back during my liquid phase, I mixed the unflavored Isopure into the broth and then put it in the microwave for about 30 seconds. It usually dissolved just fine, and by doing it that way, the Protein didn't get all clumpy. (I did that when I mixed it with cream Soup, too. I would cook a can of soup, and then let it cool down in the refrigerator before I did anything with it.)