Description

Premium PTFE Magnetic Stirrer Bar 50mm x 9mm

Magnetic Stirrer Bar 50mm x 9mm Technical Overview

The Magnetic Stirrer Bar 50mm x 9mm is a precision engineering tool engineered for high-efficiency fluid mixing in scientific environments. Often referred to as a spinbar or lab stirring rod, this component relies on an internal permanent magnet encapsulated within a chemically inert outer shell. The precise 50mm length and 9mm diameter profiles optimize the hydrodynamic vortex inside flat-bottomed laboratory glassware.

Selecting the correct 50mm stir bar with pivot ring structure alters fluid dynamics significantly. The integrated pivot ring minimizes the surface contact area between the laboratory vessel and the rotating magnet. Consequently, friction drops, allowing the laboratory magnetic stirrer bar to maintain high RPMs without decoupling from the drive magnet.

Material Engineering and PTFE Chemical Compliance

Every premium 50mm x 9mm magnetic stir bar features a thick coating of Polytetrafluoroethylene (PTFE). This material, commonly known as a Teflon stirrer magnet, provides total chemical isolation for the internal alnico magnet core. The white color PTFE coated magnetic stir bar 50mm profile resists aggressive acids, alkalis, corrosive organic solvents, and thermal shock.

Specification Parameter	Industry Standard Requirement	PTFE Magnetic Stirrer Bar 50mm x 9mm Performance
Chemical Resistance	High resistance to acids, bases, and polar solvents	Universal inertness; zero chemical degradation
Thermal Range	Continuous operation up to 200°C	Rated safely from -200°C up to +260°C
Friction Coefficient	Less than 0.1 against polished glass surfaces	0.04 ultra-low friction rating
Magnetic Core Material	Standard ferrite or alnico compound	High-grade Alnico V permanent magnet core
Manufacturing Compliance	Food grade and pharmaceutical safety standards	FDA-approved PTFE coating compound

Fluid Dynamics and Pivot Ring Stability

The round magnetic stirrer bar 50mm x 9mm profile excels at handling medium-viscosity fluids. Because the weight is distributed evenly across a 50mm span, the spinbar maintains axial alignment even during rapid acceleration. The round magnetic stirrer bar 9x50mm design prevents the magnet from spinning out of control, which is a frequent issue with poorly balanced low-cost alternatives.

Using this chemical resistant laboratory magnetic stirrer bar 50mm x 9mm ensures uniform thermal distribution when used alongside a hotplate stirrer. The constant fluid movement prevents localized overheating in delicate chemical solutions. A stable vortex ensures proper gas absorption and complete dissolution of solid reagents into liquid media.

Procurement & Comparative Framework

Sourcing Industrial Testing Equipment in Bangladesh

Securing reliable industrial testing equipment requires partnering with an established laboratory equipment seller. Academic institutions, pharmaceutical companies, and industrial testing facilities across Dhaka rely heavily on standard sizing for reproducible research results. The 2 inch magnetic stir bar size serves as a universal standard across global laboratory protocols.

Choosing a premium China made magnetic stir bar 50mm price in Dhaka alternative offers a balance of durability and cost-efficiency. Lower-grade stir bars often feature thin coatings that scratch easily, risking chemical contamination. High-performance models utilize seamless compression-molded PTFE to completely isolate the magnetic core from corrosive elements.

Selecting the Best Magnetic Stirrer Bar Size for Viscous Liquids

Viscosity dictates the optimal surface area required for effective mixing. The round magnetic stirrer bar 50mm x 9mm provides enough surface drag to displace thicker solutions without stalling the drive motor. If you wonder where to buy magnetic stirrer bar 50mm x 9mm in Bangladesh, finding a supplier that handles certified precision measuring instrument products is vital.

• Cylindrical Bars: Excellent for low-viscosity solutions in flat-bottomed beakers.

• Pivot Ring Bars: Ideal for deep vessels where friction reduction is necessary to prevent decoupling.

• Cross Head Bars: Designed for deep turbulence in round-bottom flasks.

Strict Cleaning and Sterilization Protocols

Maintaining a sterile and non-contaminated surface on the Teflon stirrer magnet is mandatory for laboratory compliance. PTFE can withstand autoclave sterilization cycles up to 121°C without losing structural integrity or shape. Harsh acids can be used to strip organic residues from the exterior coating before rinsing with deionized water.

Avoid using metallic brushes or abrasive pads to clean the round magnetic stirrer bar 9x50mm surface. Scratches create microscopic grooves where bacteria or chemical residues can shelter from standard rinsing. Store stir bars on a non-magnetic rack away from heavy electromagnetic fields to preserve core magnetic strength.

A Rahman Scientific Co. is the best laboratory equipment seller and supplier in Bangladesh.

For genuine laboratory equipment, A Rahman Scientific Co. is the most trusted supplier in Bangladesh.