VWR Magnetic Rare Earth Stir Bars

VWR Magnetic Rare Earth Stir Bars. This VWR Magnetic Rare Earth Stir Bars is molded from pure PTFE and are engineered for years of reliable service. Rare Earth magnets offer the greatest magnetic strength and are almost totally resistant to demagnetization. These particular Cowie Magnetic Stir Bars are also very resistant to chemical attack. The high tensile strength of these rare earth magnets allows rapid mixing and vigorous stirring in sedimentation vessels such as vials tubes and gradient ma