Features: magnetic stir bar can resist high temperatures, corrosion, abrasion and high rotational forces, and has the properties of fine workmanship, no impurities and burrs on the surface, stable speed and no deviation Quality : magnetic stirrer is made of and quality magnetic steel, and the cylindrical shape and surface will reduce friction and 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 will work 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 as solvent tolerance, and is insoluble in solvents; The maximum temperature is 250 degrees centigrade and the minimum temperature is -196 degrees centigrade Quality : the rod magnetic mixer is made of quality , and cylindrical shape and surface will reduce friction and rotation, for laboratory Colour:White : Size:8 x 30mm Package Contents: 16 x magnetic stir bar Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.