Features: magnetic stir bar can resist high temperatures, , abrasion and high rotational forces, and has the properties of fine workmanship, no impurities and burrs on the , stable speed and no deviation Quality material: PTFE magnetic stirrer is made of PTFE and quality magnetic steel, and the cylindrical shape and smooth reduce friction and improve smooth rotation More other applications: laboratory bar is widely applied in scientific research, universities, laboratories in the industrial and agricultural sectors, and also can be applied to stir mixed substances Widely applicable: stir plate magnet bar work well with types of magnetic stirrers or heating stirrers How to use: you can place inside a container of liquid or solution that is seated on a magnetic stirrer, and use a rotating magnet or multiple stationary electromagnets to create a rotating magnetic field Features: the laboratory bar has acid and stability as well as organic solvent tolerance, and is almost insoluble in solvents; The maximum temperature is 250 degrees centigrade and the minimum temperature is -196 degrees centigrade Quality material: the rod magnetic mixer is made of quality PTFE, and its cylindrical shape and smooth reduce friction and improve smooth rotation, nice for laboratory Colour:White Material:PTFE Size:8 x 30mm Package Contents: 48 x magnetic stir bar 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.