Analytical methods based on volume measuring are named titrimetric or volumetric methods. In titrimetric analyses, we add a reagent of exactly known concentration to a solution of analyzed compound until they completely react – a process called titration. They are highly accurate and precise, rapid and nowadays automated.
Analytical chemistry gives you the ability to ask and answer the questions such as "What is something made of?" or "How much of each constituent is present in the sample?" The main purpose of analytical chemistry is to identify or quantify analytes in the sample. For example, give the analytical chemist a cup of coffee and he/she will tell you if there is caffeine in it, how much sugar you've added or what elements is your cup made of.