Main Page | See live article | Alphabetical index A bacteriostat is a biological or chemical agent that causes bacteriostasis. It stops bacteria from reproducing, while not necessarily harming them otherwise. Upon removal of the bacteriostat, the bacteria usually start to grow again. Bacteriostats are often used in plastics to prevent growth of bacteria on the plastic surface. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.