Magnetic stir bar retrievers are coated with PTFE covering, which is chemically inert. Perfect for chemistry and biology research, home-laboratory use, home to make a , or tinctures salves. resistance, for most chemicals and solvents that show, inert, to acid and , water and various organic solvents. It can effectively helps you easily pick up your stir bars from the bottom of containers. The product is widely used in the , scientific research and experiments etc., Weight: 0.0992080179 Pounds, Manufacturer: Ehwisbe