Magnetic stir bar retrievers are coated with PTFE covering, which is chemically inert. resistance, for most chemicals and solvents that show, inert, to acid and , water and organic solvents. Perfect for chemistry and biology research, home-laboratory use, home to make a , or tinctures salves. 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. Are you looking for a professional, yet affordable magnetic stir bar retriever ? Are you in search of a sturdy, magnetic stirrer bar that can do multiple jobs ? If yes, look no further! Our professional magnetic stir bar retriever must meet you needs. It is one of the best choices . Colour:White Material:PTFE Package Contents: 1 x magnetic retriever Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.