a. use 3 drops of indicator test solution for a titration unless otherwise directed 

b. when a strong acid is titrated with a strong alkali, or a strong alkali with a strong acid – Methyl     orange, methyl red or phenolphthalein may be used

c. when a weak acid is titrated with a strong alkali, use phenolphthalein as indicator 

d. When a weak alkali is titrated with a strong acid– Use methyl red as indicator 

e. a weak alkali should never be titrated with a weak acid, or vice versa since no indicator will give a sharp end point. 

f. the appearance of a color is more easily observable than the disappearance. Therefore always titrate where possible to the appearance of a color.