Titrators are designed to perform a wide variety of potentiometric titrations with high accuracy, flexibility, and reproducibility, allowing the user to obtain both accurate results and high-speed analysis. These titrators can perform fixed endpoint or equivalence point titrations and direct measurements by measuring the pH/mV and temperature of the sample. Reports and methods can be transferred to a PC via a USB interface, saved to a USB storage device, or printed directly from the titrator. An external keyboard can also be attached for added convenience.
Titration is used in analytical chemistry to determine the amount or concentration of a substance, known as the analyte. Titration is a quantitative measurement of an analyte in solution by its complete reaction with a reagent. In a titration, one reagent (the titrant) is slowly added to a solution containing the species being measured (the analyte). As it is added, a chemical reaction occurs between the titrant and analyte. The point at which the reaction is complete and an equivalent quantity of titrant and analyte are present (a stoichiometric equivalent) is called the equivalence point. This can be determined by a chemical indicator that is also present in the solution, or by a measurable physical change in the solution, like pH, electrode potential, conductivity, or light absorption (color). In practice, an abrupt change of this physical property signals the end of titration, called the endpoint.
The purpose of titration is to determine the quantity or concentration of an analyte with a known concentration and volume of a titrant. Titrations are based on chemical reactions which must fulfill four requirements:
- The reaction between the analyte and the titrant must occur quickly, without a secondary reaction
- The reaction must go to completion
- The reaction must have well-known stoichiometry (reaction ratio)
- Must have a convenient method of endpoint detection