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There are many types of titrations with different procedures and goals. The most common types of qualitative titration are acid-base titrations and redox titrations.
Acid–base titration
| Indicator | Color on acidic side | Range of color change | Color on basic side |
| Methyl violet | Yellow | 0.0–1.6 | Violet |
| Bromophenol blue | Yellow | 3.0–4.6 | Blue |
| Methyl orange | Red | 3.1–4.4 | Yellow |
| Methyl red | Red | 4.4–6.3 | Yellow |
| Litmus | Red | 5.0–8.0 | Blue |
| Bromothymol blue | Yellow | 6.0–7.6 | Blue |
| Phenolphthalein | Colorless | 8.3–10.0 | Pink |
| Alizarin yellow | Yellow | 10.1–12.0 | Red |
Acid-base titrations depend on the neutralization between an acid and a base when mixed in solution. In addition to the sample, an appropriate indicator is added to the titration chamber, reflecting the pH range of the equivalence point. The acid-base indicator indicates the endpoint of the titration by changing color. The endpoint and the equivalence point are not exactly the same because the equivalence point is determined by the stoichiometry of the reaction while the endpoint is just the color change from the indicator. Thus, a careful selection of the indicator will reduce the indicator error. For example, if the equivalence point is at a pH of 8.4, then the Phenolphthalein indicator would be used instead of Alizarin Yellow because phenolphthalein would reduce the indicator error. Common indicators, their colors, and the pH range in which they change color are given in the table above. When more precise results are required, or when the reagents are a weak acid and a weak base, a pH meter or a conductance meter are used.
Redox titration
Redox titrations are based on a reduction-oxidation reaction between an oxidizing agent and a reducing agent. A potentiometer or a redox indicator is usually used to determine the endpoint of the titration, as when one of the constituents is the oxidizing agent potassium dichromate. The color change of the solution from orange to green is not definite, therefore an indicator such as sodium diphenylamine is used. Analysis of wines for sulfur dioxide requires iodine as an oxidizing agent. In this case, starch is used as an indicator; a blue starch-iodine complex is formed in the presence of excess iodine, signalling the endpoint.
Some redox titrations do not require an indicator, due to the intense color of the constituents. For instance, in permanganometry a slight persisting pink color signals the endpoint of the titration because of the color of the excess oxidizing agent potassium permanganate.
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