MAGNETIC STIR BAR, 40 MM This 40 mm magnetic stir bar is a high-quality laboratory accessory designed for effective and reliable mixing in a variety of vessels. Its small size makes it suitable for small to medium volumes and ensures smooth and consistent mixing performance.

Main Benefits

An oval or polygonal design ensures effective mixing with minimal friction in round-bottom or flat-bottom vessels, reducing wear PTFE coating provides chemical inertness and resistance to aggressive substances, maintaining sample integrity Strong internal magnet (Alnico V or Neodymium depending on the model) maintains coupling with the stirring motor, preventing slippage even at high speeds Axial ring or elevated design (in some models) reduces contact area, minimizes noise, and enhances stability during stirring

Components

Internal Magnet: Alnico V or Neodymium (depending on the model) Outer Coating: PTFE (Teflon®), chemically inert and low friction Shape: Available in oval, polygonal, octagonal, or cylindrical shapes depending on the model

Usage Instructions

Intended for use with magnetic stirring plates to achieve homogeneous mixing in laboratory vessels Select the appropriate shape and size to match the vessel shape and desired level of mixing turbulence Ensure the bar is centered on the stirring plate and rotates freely without obstructions Speed or stirring conditions should be determined by a specialist based on application requirements

Package Size

Available as individual units or in multi-packs (such as packs of 5, 20, or 50 pieces depending on supplier and model)

Note

Different models offer features such as axial rings, central protrusions, or multi-sided surfaces to enhance mixing efficiency and reduce wear on containers. Choose the model that suits your laboratory setup and the type of vessel used.