Dr. Harrit et al quite openly stated this distinctness in the 2009 Bentham paper.
Of course there are a lot of colored chips in the 9/11 WTC dust, but the scientists agreed that after magnetic extraction, the red candidate chips could be readily discerned by eye from the many other red chips e.g. steel primer paint.
First it was the resistivity test that you said was the test that helped determine what was paint and what was thermitic. Then you were shown that the paper said they tested ONE chip for resisitivity.
After you were shown your "resisitivity test" claim was crap, you move to the DSC test that you thought proved the chips were not paint. After being shown they only tested 3 of the 4 samples, proving that THAT test was not donw on all the samples, you now move to the "discerned by eye" garbage.
Pathetic.
My point in all this is that Harrit and his group contradict themselves and prove their own paper to be incorrect.
They assumed all the chips that were magnetically attracted AND having red/gray layers were thermitic. Not once did they make any statement in their paper that they found anything BUT thermitic chips. Then Jones (and others) opened his yapper (after the paper was published) and states that there were supposedly other types of red/gray, magnetically attracted chips.
The best part of all this is that according to you, Jones, and others, they had primer paint chips in their possession yet chose to go to other published findings to get their "paint chip" characteristics instead of directly testing those paint chips that they supposedly had in their hands!
Why didn't they test any of the red/gray, magnetically attracted paint chips they supposedly separated to see if THOSE reacted in the DSC test?
The bottom line is they assumed all the chips were thermitic. That's why they didn't run every single test on every single chip. They randomly did tests on random chips. That's why you keep changing your tune as to what test/s they actually did to prove they had the right chips.