You learned in Theory that if the black precipitate obscures the color of the butt that it must be acidic and scored as “A.” Why do you think this is true? LIA is a combination medium. Which test(s)...

You learned in Theory that if the black precipitate obscures the color of the butt that it must be acidic and scored as “A.” Why do you think this is true?

LIA is a combination medium. Which test(s) does it replace?

Nov 11, 2021