Description This stir bar is made of premium PTFE material, safe, acid and alkali resistance. It used for helping stir a liquid or solution in biological, chemical, and research laboratory applications. Light weight and Compact size, easy to use and operate, simple and conveneint. Features -Color: White -Material: PTFE - Size: 31.00X5.00X1.00cm/12.18X1.97X0.39in - Low-temperature resistance: a good mechanical toughness, even if the temperature dropped to -196 degree, 5% can also maintain the application rate. - For most of the chemicals and solvents, showing inertia, the ability of strong acid and alkali, aqua regia and a variety of organic solvents. - Made of premium material for durable and long lasting use. - Non-adhesion: with a solid material in the smallest surface tension, does not adhere to any substance. - Easy to use, suitable for personal or professional use. - Color: White. - Size: 29X5X1CM. Package Including 1 x Stirring Bar