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Features & Details
⚙️ PIVOT RING DESIGN
Features a precision center ring natively. Therefore, it reduces friction and ensures a stable, noise-free vortex in flat-bottom glass beakers.
🧪 PURE PTFE COATING
Encapsulates the strong magnetic core in virgin Polytetrafluoroethylene. Specifically, it easily resists aggressive acids, alkalis, and organic solvents.
🧲 ALNICO V MAGNET
Equipped with a highly powerful Alnico V magnetic core securely. Ultimately, it maintains continuous, high-speed rotation without decoupling from the stirrer plate.
📦 BULK PACKAGING
Available in over 20 precise dimensions. Depending on the size requirements, you receive convenient 2, 5, or 10-piece bulk packs for your laboratory.
About this item
Frictionless Mixing with the Type B Stirrer Bar
Achieving uniform chemical homogenization without inducing mechanical stress on fragile glass vessels is a fundamental challenge in modern laboratories. A specialized Type B stirrer bar provides the perfect hydrodynamic solution for flat-bottom containers. By utilizing an integrated central pivot ring, this magnetic agitator minimizes physical contact with the glassware, drastically reducing friction and preventing annoying chatter during high-speed rotation. Whether you are conducting delicate biological cell culture suspensions or aggressive solvent extractions, this tool ensures completely stable and quiet vortex generation.
Professional manufacturing facilities explicitly follow the global ASTM D4894 specifications for polytetrafluoroethylene (PTFE) resins to guarantee absolute material purity. We crafted this magnetic agitator using premium virgin PTFE to ensure zero sample contamination. Explore our complete Lab Stirring & Heating collection to secure the most reliable mixing hardware for your research facility immediately.
1Advanced Center Pivot Ring Design
Standard cylindrical magnets scrape aggressively against the flat bottom of Erlenmeyer flasks, scratching the glass and generating erratic jumping behaviors at high speeds. The Type B design solves this by incorporating a raised pivot ring around its center. This specific geometric feature acts as a frictionless bearing, allowing the bar to spin smoothly like a top. It maximizes the rotational speed while minimizing the contact area, extending the life of your expensive glassware.
2Alnico V Core & Pure PTFE Coating
Inside the chemically inert Teflon shell lies a high-strength Alnico V magnetic core. This powerful magnet prevents the bar from decoupling or “spinning out” from the magnetic stirrer drive, even when mixing thick, highly viscous liquids like synthetic resins or heavy petroleum samples. The outer virgin PTFE coating provides absolute chemical inertness, ensuring no metallic ions leach into your sensitive acid or alkali titrations.
3Diverse Laboratory Application Scenarios
This specialized magnetic rotor is built for versatility across multiple scientific disciplines. In microbiology, it gently agitates cell culture media without shearing delicate proteins. In analytical chemistry, it creates a deep, consistent vortex for rapid solid solute dissolution. Furthermore, it is the ideal companion for automated titration setups, ensuring your reagents are perfectly homogenized before every pH measurement reading.
Core Capabilities of the Magnetic Agitator
🛡️ Rust & Corrosion Proof
The seamless PTFE casing prevents any liquid penetration, eliminating the risk of internal magnet rust or sample contamination.
♨️ High Temp Stable
Capable of withstanding aggressive boiling applications and safe for repeated sterilization in laboratory autoclaves at 121°C.
✨ Easy to Clean
The mirror-polished, non-stick Teflon surface ensures that thick residues wipe off effortlessly between different experimental batches.
📐 Over 20 Sizes
Available in a massive variety of dimensions to perfectly match the base diameter of your specific beaker or reaction flask.
Investing in a reliable Type B stirrer bar is absolutely essential for maintaining strict fluid dynamic control. Our magnetic agitators combine immense rotational stability with absolute chemical inertness, making them the perfect solution for researchers evaluating sensitive liquid mixtures and high-viscosity suspensions.
FAQs
Q1: What is the main purpose of the pivot ring on a Type B stirrer bar?
A1: The center pivot ring acts as a low-friction bearing. Instead of the entire cylindrical body scraping against the glass, only the raised ring touches the bottom of the beaker. This greatly reduces friction, prevents the bar from chattering or jumping at high speeds, and protects your delicate glassware from scratches.
Q2: How do I choose the right size stirrer bar for my beaker?
A2: As a general rule of thumb, the length of the magnetic stirrer bar should be approximately 1/3 to 1/2 the diameter of your container’s base. If the bar is too small, it won’t create a strong enough vortex to mix the liquid. If it is too large, it may hit the curved edges of the flask and spin out of control.
Q3: Can I use this PTFE bar for boiling acidic solutions?
A3: Yes. Pure PTFE (Teflon) is one of the most chemically inert and heat-resistant materials available. It will not melt, degrade, or react when submerged in boiling aggressive acids or harsh organic solvents, ensuring your chemical samples remain completely uncontaminated.
Q4: How should I properly clean and store these magnetic stirrers?
A4: Because PTFE is anti-adhesive, simply rinsing it with distilled water or an appropriate solvent immediately after use is usually sufficient. For storage, keep them in pairs so their magnetic poles attract each other, and avoid storing them near strong external magnetic fields to prevent the Alnico core from demagnetizing over time.
Type B Stirrer Bar, PTFE Magnetic Cylindrical Mixer with Pivot Ring by Xin Tester
Price range: $6.25 through $15.06
6–12 Month Warranty
Repair & Refund support available for most products.
Free Worldwide Shipping
Ships within 3 business days.
Taxes & Duties
Buyer responsible for local import fees.
24/7 After-Sales Support
Technical assistance & video guidance within 24h.
Type B Stirrer Bar, PTFE Magnetic Cylindrical Mixer with Pivot Ring by Xin Tester
Sale!
Price range: $6.25 through $15.06
Features & Details
⚙️ PIVOT RING DESIGN
Features a precision center ring natively. Therefore, it reduces friction and ensures a stable, noise-free vortex in flat-bottom glass beakers.
🧪 PURE PTFE COATING
Encapsulates the strong magnetic core in virgin Polytetrafluoroethylene. Specifically, it easily resists aggressive acids, alkalis, and organic solvents.
🧲 ALNICO V MAGNET
Equipped with a highly powerful Alnico V magnetic core securely. Ultimately, it maintains continuous, high-speed rotation without decoupling from the stirrer plate.
📦 BULK PACKAGING
Available in over 20 precise dimensions. Depending on the size requirements, you receive convenient 2, 5, or 10-piece bulk packs for your laboratory.
Frictionless Mixing with the Type B Stirrer Bar
Achieving uniform chemical homogenization without inducing mechanical stress on fragile glass vessels is a fundamental challenge in modern laboratories. A specialized Type B stirrer bar provides the perfect hydrodynamic solution for flat-bottom containers. By utilizing an integrated central pivot ring, this magnetic agitator minimizes physical contact with the glassware, drastically reducing friction and preventing annoying chatter during high-speed rotation. Whether you are conducting delicate biological cell culture suspensions or aggressive solvent extractions, this tool ensures completely stable and quiet vortex generation.
Professional manufacturing facilities explicitly follow the global ASTM D4894 specifications for polytetrafluoroethylene (PTFE) resins to guarantee absolute material purity. We crafted this magnetic agitator using premium virgin PTFE to ensure zero sample contamination. Explore our complete Lab Stirring & Heating collection to secure the most reliable mixing hardware for your research facility immediately.
1Advanced Center Pivot Ring Design
Standard cylindrical magnets scrape aggressively against the flat bottom of Erlenmeyer flasks, scratching the glass and generating erratic jumping behaviors at high speeds. The Type B design solves this by incorporating a raised pivot ring around its center. This specific geometric feature acts as a frictionless bearing, allowing the bar to spin smoothly like a top. It maximizes the rotational speed while minimizing the contact area, extending the life of your expensive glassware.
2Alnico V Core & Pure PTFE Coating
Inside the chemically inert Teflon shell lies a high-strength Alnico V magnetic core. This powerful magnet prevents the bar from decoupling or “spinning out” from the magnetic stirrer drive, even when mixing thick, highly viscous liquids like synthetic resins or heavy petroleum samples. The outer virgin PTFE coating provides absolute chemical inertness, ensuring no metallic ions leach into your sensitive acid or alkali titrations.
3Diverse Laboratory Application Scenarios
This specialized magnetic rotor is built for versatility across multiple scientific disciplines. In microbiology, it gently agitates cell culture media without shearing delicate proteins. In analytical chemistry, it creates a deep, consistent vortex for rapid solid solute dissolution. Furthermore, it is the ideal companion for automated titration setups, ensuring your reagents are perfectly homogenized before every pH measurement reading.
Core Capabilities of the Magnetic Agitator
🛡️ Rust & Corrosion Proof
The seamless PTFE casing prevents any liquid penetration, eliminating the risk of internal magnet rust or sample contamination.
♨️ High Temp Stable
Capable of withstanding aggressive boiling applications and safe for repeated sterilization in laboratory autoclaves at 121°C.
✨ Easy to Clean
The mirror-polished, non-stick Teflon surface ensures that thick residues wipe off effortlessly between different experimental batches.
📐 Over 20 Sizes
Available in a massive variety of dimensions to perfectly match the base diameter of your specific beaker or reaction flask.
Investing in a reliable Type B stirrer bar is absolutely essential for maintaining strict fluid dynamic control. Our magnetic agitators combine immense rotational stability with absolute chemical inertness, making them the perfect solution for researchers evaluating sensitive liquid mixtures and high-viscosity suspensions.
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