Magnetic Stir Bars Teflon® Coated 8 mm x 20 mm PTFE Type B

Magnetic Stir Bar, B Style, 8 mm diameter x 20 mm long Teflon coated magnetic Stir Bar, B Style, 8 mm diameter x 20 mm long for small to medium sized flat bottom vessels Teflon®-coated for increased chemical-resistance Suited for many solvents, acids, and bases For stirring in small size beakers or other containers. Suitable for many solvents, acids, and bases Used for up to  292 °C  (482 °F) temperature Shipped from fully stocked USA warehouse in Knoxville, TN Magnetic Stir Bar 8 x 20 mm PTFE Applications: Used to stir liquids beakers and flasks of small to medium size  Increased heat transfer during stirred operations by maintaining minimum temperature in contact with heated surface Less chance of boil overs as stir bar acts as nucleating site for bubbles Mixing of solids and liquids to enhance dissolution rates Maximizes evaporation rate by increasing the surface area exposed to the air through development of a vortex and drawing addition air into the mixing that becomes saturat