A chemical diluent is an ingredient used to reduce the concentration of an active material. Another common definition of diluent is a substance added to finished product (such as heroin) to increase bulk. In this sense, there is no clear distinction between a diluent and an extender. In heroin manufacture, “diluents” refer to extenders. Typical diluents for heroin are mannitol, sucrose, lactose, and starch.
A liquid used in coatings to reduce the consistency and make a coating flow more easily. The water in latex coatings is a diluent. A diluent may also be called a "Reducer," "Thinner," "Reducing Agent" or "Reducing Solvent."
Liquids which increase the capacity of a solvent for the binder. Diluents cannot dissolve the binder themselves, but rather are used to control viscosity, flash time, or cost. While true solvents can be added in unlimited amounts to lower paint viscosity, it may be more economical to lower viscosity with less-costly diluent solvents. When added to a prepared paint, a diluent will lower the viscosity just as effectively as a true solvent. However, if too much diluent is added, the resin will separate out of solution and the paint becomes unusable.
Used to dilute whole blood to a cell concentration suitable for measurement. Diluent also stabilizes cell membranes, carries electrical current or RF energy, and focuses the sample stream for optical counters.