The primary function of a stirring rod is to stir solutions by hand. Stirring rods have other uses in the laboratory, however, including helping to decant liquid from containers, breaking up emulsions and inducing crystallization.Continue Reading
Stirring rods are used to decant or pour liquids slowly. Slow pouring is essential when working with potentially hazardous chemicals that can react too quickly. Using the stir rod to decant liquid makes it easier to keep a precipitate in the bottom of the beaker, because the liquid pours more slowly, reducing the chances of it agitating the solid.
To induce crystallization in a recrystallization experiment, the glass stirring rod is scraped against the inside of the flask containing the solution.Learn more about Chemistry
To determine the end of the side of the tie rod end that is bad, Know Your Parts says to grasp both ends by hand and push up and down. A pry bar should not be used for this inspection. Any free play indicates wear of the joint, a cause for replacement. It recommends against the use of any tools in testing, especially pry bars and water pump pliers.Full Answer >
According to the Office of Dietary Supplements at the National Institutes of Health, rust, or iron(III) oxide, is not harmful to healthy individuals with normal intestinal function. As Wikipedia explains, the ingested iron uptake is regulated through several mechanisms that maintain proper circulatory iron.Full Answer >
According to the Linus Pauling Institute at Oregon State University, phosphorus is an essential nutrient that all human cells require to function. The New York Times identifies the primary purpose of phosphorus as helping bones and teeth develop.Full Answer >
Several harmful effects of nitrogen on human health include causing vitamin A shortages, decreasing function of the thyroid gland and decreasing the blood's ability to carry oxygen. These effects are seen when nitrogen occurs in an ion form, such as nitrite or nitrate.Full Answer >