Q: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
One form of it uses a reaction between iodine and sulfur dioxide to measure the presence of water, and is named for Fischer. A conductometric version of performing it requires the temperature to be constant, while the redox variety of it uses a potentiometer. This process is generally represented by a sigmoid curves, whose midpoint usually gives the equivalence point. For 10 points, identify this method used to find the concentration of an unknown sample, notably used with acids and bases.
A:
Science