Two-colour indicators ;
Acid : Alkali ,
Litmus : red Blue
phenofphonatein : colorless pink
mesuyl orange : red
yellow
universal indicator;
Add a
fewcolor dropsis to the solution
So the matched
with a color chart .
Acid : Alkali ,
Litmus : red Blue
phenofphonatein : colorless pink
mesuyl orange : red
yellow
universal indicator;
Add a
fewcolor dropsis to the solution
So the matched
with a color chart .