Here are some generic examples where people discuss your advice to use volumetric measures with solids. It covers a wide range of chemicals. Also there is a quote below. If you do a search on you come up with pages of text with either your generic advice to use volumetric measure or others commenting on it. In my post above, I show a simple test to reveal the fallacy in that method which can yield errors of about 10% - 30% depending on crystal habit. It does not matter that I picked KBr, what matters is crystal habit. Crystalline Ascorbic Acid vs powdered Ascorbic Acid can show the same problem. It is a sad commentary on your understanding of this that you have not recognized the error in your statement regarding my use of KBr.

I would also like to add that we have had this entire fruitless discussion a year or more ago to no avail. I gave data at that time as well but it seems that it was ignored. I even pointed out that in one bottle the crystal habit can vary as the large crystals in a jar move to the top. Thus a spoonfull of a chemical can vary as you use one single bottle.



"It is easy in teaspoon measure. 2 tsp acid and 1 tsp baking soda (not powder)to the liter is close enough,......."

As it becomes more difficult to get prepackaged processing chemistry, we must develop and foster good lab technique in those who will follow us otherwise we fail those future analog photographers.

I myself emphatically do not recommend volumetric measure of solids for serious photographic work.