#3232968
Oráiste meitile, tuaslagán 0,1 % (w/v).
Methyl orange, solution 0,1 % (w/v).
Oráiste meitile, tuaslagán 0,1 % (w/v).
Methyl orange, solution 0,1 % (w/v).
Cuir cúpla braon de thuaslagán oráiste meitile leis (pointe 3.4) agus ansin, go cúramach agus á chorraí go leanúnach, cuir aigéad hidreaclórach leis (pointe 3.5) go dtí go dtiocfadh dath dearg ar an leacht go dearfa.
Add a few drops of methyl orange solution (point 3.4) then, carefully and stirring continuously, add hydrochloric acid (point 3.5) until the liquid turns a definite red.