octagonal magnetic stirring bars, with pivot ring

Description :

Octagonal Magnetic Stirring Bars with Pivot Ring Octagonal magnetic stirring bars with pivot rings are specialized laboratory tools designed to provide efficient and thorough mixing. Their unique octagonal shape and the addition of a pivot ring enhance their mixing capabilities, making them ideal for various laboratory applications. Here’s an in-depth look at their features, applications, and benefits: Design and Shape Octagonal Shape: The octagonal design of these stirring bars provides multiple flat surfaces, which increases turbulence and improves mixing efficiency compared to traditional cylindrical stirring bars. The flat sides help create more agitation in the liquid, promoting uniform mixing. Pivot Ring: The pivot ring is a small, raised ring located around the center of the stirring bar. This ring reduces friction between the bar and the bottom of the vessel, allowing for smoother rotation and preventing the bar from wandering or jumping during mixing. Applications Chemical Synthesis: Ideal for chemical synthesis where thorough mixing of reactants is crucial to achieve uniform reaction conditions. Biological Research: Used for mixing biological samples, such as cell cultures or biological fluids, where consistent and gentle mixing is necessary. Pharmaceuticals: Suitable for the preparation of pharmaceutical formulations where precise mixing is essential. Environmental Testing: Employed in environmental testing laboratories to mix samples and reagents, ensuring thorough distribution and accurate analysis. Analytical Chemistry: Used in analytical chemistry for preparing homogeneous solutions and suspensions. Benefits Enhanced Turbulence: The octagonal shape creates enhanced turbulence, ensuring efficient and thorough mixing of the liquid. This design is particularly effective for creating strong mixing currents. Smooth Rotation: The pivot ring reduces friction between the stirring bar and the vessel, allowing for smoother and more stable rotation. This helps prevent the bar from wandering or jumping during mixing, ensuring consistent and reliable performance. Chemical Resistance: The PTFE coating provides excellent resistance to a wide range of chemicals, making these stirring bars suitable for use in harsh chemical environments. Durability: The robust magnetic core and durable PTFE coating ensure long-lasting performance, even under continuous use. Versatility: Suitable for use in a variety of vessels, including beakers, flasks, and larger containers, making them versatile tools for different laboratory applications. Tips for Use Magnetic Stirrer Compatibility: Ensure the magnetic stirrer used is compatible with the size and shape of the octagonal stirring bar with a pivot ring to achieve optimal performance. Appropriate Vessel: Use octagonal stirring bars in vessels that match their size and shape to ensure effective mixing. Their design is suitable for a range of vessel types. Cleaning and Maintenance: Regularly clean the stirring bars to remove any residues and maintain their chemical resistance and performance. PTFE-coated bars can usually be cleaned with mild detergents and rinsed thoroughly with water. Comparison with Other Shapes Cylindrical Bars: Cylindrical bars are more suited for simple, high-speed stirring in flat-bottomed vessels, while octagonal bars with pivot rings provide better performance due to their enhanced turbulence and smoother rotation. Oval Bars: Oval bars are effective for round bottom flasks but may not create the same level of turbulence as octagonal bars, which are designed to create strong mixing currents. Triangular Bars: Triangular bars generate strong turbulence at low speeds and are effective for churning sediments, while octagonal bars with pivot rings are designed for efficient mixing and smooth rotation in various applications. Summary Octagonal magnetic stirring bars with pivot rings are essential tools for laboratories that require efficient and thorough mixing. Their unique octagonal design and the addition of a pivot ring enhance turbulence and ensure smooth rotation, making them suitable for a wide range of applications in chemical synthesis, biological research, pharmaceuticals, environmental testing, and analytical chemistry. The combination of a strong magnetic core and durable PTFE coating ensures long-lasting performance and excellent chemical resistance, making these stirring bars a valuable addition to any laboratory. * Assorted pack contains 2 pcs each of 8×13 mm 8×22 mm 8×30 mm 8×41 mm and 1 pcs each of 8×51 mm 8×64 mm 1 Alnico V magnets are composed primarily of aluminum (Al), nickel (Ni), and cobalt (Co), along with small amounts of other elements such as copper (Cu) and titanium (Ti). The composition typically consists of approximately 9% aluminum, 24% nickel, 13% cobalt, 3% copper, and 1% titanium, with the remainder being iron (Fe). The exact composition may vary from batch to batch. Alnico V magnets are known for their strong magnetic properties and high resistance to demagnetization. CARE INSTRUCTIONS To ensure the longevity and effectiveness of magnetic stirring bars, it's essential to handle and maintain them properly: Cleaning: Regularly clean the stirring bars after each use to prevent buildup of residue or contamination. Use a suitable cleaning agent and rinse thoroughly with distilled water. Storage: Store stirring bars away from strong magnetic fields and corrosive chemicals. Store them in a dry and clean environment to prevent damage. Handling: Handle stirring bars with care to avoid chipping or breaking. Avoid dropping or banging them against hard surfaces. Compatibility: Ensure that the stirring bars are compatible with the solvent or solution being stirred. Some chemicals can react with or damage certain types of stirring bars. Usage: Use stirring bars within their specified temperature and chemical compatibility limits. Avoid overheating or exposing them to harsh chemicals. Maintenance: Inspect stirring bars regularly for signs of damage or wear. Replace any damaged or worn bars to maintain optimal performance. Following these care guidelines can help prolong the life of your magnetic stirring bars and ensure they perform effectively in your laboratory applications. Optional but useful Chempure® Magnetic Stirring Bar Retriever, PTFE Cylindrical permanent magnet with sealed ends, designed for easy insertion or removal of bars. Chempure® Magnetic Stirring Bar Flexible Retriever, PTFE