Magnetic Stirrer Bar with Pivot Ring PTFE

Upgrade your stirring game with our premium Magnetic Stir Bar featuring a unique Pivot Ring design. Unlike standard bars that scrape and chatter against the bottom of your glassware, this advanced design raises the bar slightly, reducing friction for a quieter, smoother spin.

Crafted from high-quality chemically inert PTFE (Teflon) , this stir bar is resistant to strong acids, bases, and solvents, ensuring it won't contaminate your solutions.

Key Features:

· Prevents Scraping: The raised pivot ring minimizes contact with the flask, protecting both your glassware and the magnetic core.

· Ultra-Smooth Rotation: Reduced friction allows for consistent stirring at higher speeds without "de-synchronizing."

· Chemically Resistant: 100% Pure PTFE coating.

· Strong Magnetic Core: Encased alnico magnet provides a strong coupling with your stir plate.

· Perfect Size: The 7mm diameter x 25mm length is ideal for 50ml to 1000ml vessels.

How to Use:

1. Place: Simply drop the stir bar into your beaker, flask, or media bottle containing your solution.

2. Position: Place the glassware in the center of your magnetic stirrer plate.

3. Start Slow: Begin stirring at a low speed to allow the bar to center itself and find its natural rotation.

4. Increase Speed: Gradually increase the RPM to achieve your desired vortex. The pivot ring ensures it stays quiet, even at higher speeds.

· Easy to Clean & Autoclavable

Important Usage & Care Tip

1. Speed Control: Always start with the stirrer speed on low and gradually increase. Starting at maximum speed can cause the bar to "throw" out of sync.

2. Vessel Fit: This size is best suited for round-bottom flasks or flat-bottom beakers between 50ml and 1000ml. If the vessel is too large, the magnetic field may be too weak to spin the bar effectively.

3. Cleaning: PTFE is non-stick and easy to clean. Rinse with deionized water and mild detergent. For sterilization, autoclave at 121°C (250°F).

4. Storage: Store away from strong magnetic fields to prevent demagnetization when not in use.

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Stir bar, Magnetic stirrer, PTFE stir bar, Lab stir bar, 7mm stir bar, Pivot ring, Stirring flea, Lab equipment, Mixing bar, Alnico magnet.