The Bel-Art Scienceware F377750000 HDPE magnetic stir bar retriever removes a magnetic stir bar from a container without touching the contents of the container to help prevent splashing and contamination of contents during removal. Because it does not touch the contents of the container, the retriever does not require cleaning or sterilization after use. It has a ribbed handle for a secure grip and can be operated with one hand. The retriever is made from high-density polyethylene (HDPE), which provides resistance to chemicals and abrasion. The rectangular section with built-in magnet measures 1 x 2.75" (25 x 70 mm) (H x W, where H is the height, the vertical distance from top to bottom, and W is the width, the horizontal distance from left to right). The overall length of the retriever is 7.7" (20 cm). It is for use in laboratory stirring applications.
Magnetic stir bars (sometimes called stirring bars, spin bars, or fleas) are used to stir a liquid or solution in biological, chemical, medical, and research laboratory applications. The stir bar is placed inside a container of liquid or solution that is seated on a magnetic stirrer (also called a magnetic mixer), which is a laboratory device that creates a rotating magnetic field using a rotating magnet or multiple stationary electromagnets. The rotating magnetic field causes the bar to spin, which stirs the liquid or solution. Stirring bars are offered in a variety of sizes and shapes, and they are encased in materials such as glass or plastic to help prevent contamination of the liquid or solution, to reduce friction, and to provide resistance to chemicals, abrasion, and heat. The bar may have a pivot ring or pivot point to minimize contact with the container, reduce friction, and improve its spinning. The size and shape of the container and the volume and viscosity of the liquid or solution to be stirred determine which stir bar shape, size, and casing will suit a particular application.
Bel-Art Products manufactures scientific products, including labware, testing equipment, and safety supplies, under the Bel-Art and Scienceware brands. The company, founded in 1946, is headquartered in Wayne, NJ.