Q. Will these strain coffee grounds without falling through?
A. We had to test this out ourselves, but unfortunately, this is not the case. The grain size of a ground coffee can be compared to that of flour. There are hardly any strainers that are fine enough to strain coffee. Most people use a coffee filter inside these strainers to make sure it doesn't fall through.
Q. Will Quinoa fall through, or is the mesh fine enough that it will not?
A. Actually, this why I bought it, to rinse my quinoa. So just to confirm the mesh is fine enough that it will not fall through.
Q. what is the diameter of the largest srtrainer?
A. Thank you for your question. The diameter of the largest strainer is 7-7/8-inch. I hope to have informed you sufficiently.