c-type-cylindrical-magnetic-stirrer-bar--ptfe-lab-stirrer, c-type-cylindrical-magnetic-stirrer-bar--ptfe-lab-stirrer, /magnetic-stirrer-bar
EN
The HAI JU C-type cylindrical magnetic stir bar is completely flat along its length, allowing it to sit flush against the bottom of flat-bottomed beakers, carboys, and culture flasks. However, what sets the HAI JU design apart is its advanced polygonal, multi-faceted surface structure. Instead of a perfectly smooth cylinder, this multi-angled profile acts as a fluid disruptor. As the bar rotates, these micro-facets constantly interrupt the liquid's laminar flow, converting it into localized micro-turbulences. This unique geometry ensures deep vertical dispersion and faster material dissolution without having to crank up your laboratory hotplate mixer to dangerously high, splash-prone RPMs.
Product Overview
Looking for a heavy-duty blending solution that won't compromise on vortex strength or slip out of alignment? The HAI JU C-type cylindrical magnetic stir bar features a specialized straight-walled design without a pivot ring, specifically optimized for flat-bottomed vessels and automated micro-reactors. Fully encapsulated in high-purity virgin Teflon, these premium PTFE stirrer bars excel in high-demand chemical reagent stirring, intensive semi-fluid stirring, and aggressive acid/alkali processing. Powered by an internal rare-earth NdFeB permanent magnet, this magnetic stirrer bar ensures maximum surface area contact and massive torque synchronization from -200°C to 110°C, delivering uniform, repeatable results every single time.
| Diameter × Length | ||||||||
| 1.5×9mm | 3×15mm | 6×10mm | 6×70mm | 7×50mm | 8×45mm | 9×50mm | 10×60mm | 15×55mm |
| 2×2mm | 3×35mm | 6×15mm | 6×80mm | 8×13mm | 8×50mm | 9×60mm | 10×70mm | 15×125mm |
| 2×7mm | 4×10mm | 6×20mm | 7×17mm | 8×15mm | 8×55mm | 9×70mm | 10×80mm | 16×25mm |
| 3×5mm | 4.5×12mm | 6×25mm | 7×20mm | 8×20mm | 8×60mm | 9×80mm | 10×90mm | 16×30mm |
| 3×6mm | 5×10mm | 6×30mm | 7×22mm | 8×22mm | 8×67mm | 10×25mm | 10×100mm | 16×35mm |
| 3×7mm | 5×12mm | 6×35mm | 7×25mm | 8×25mm | 8×70mm | 10×35mm | 11×37mm | 16×100mm |
| 3×8mm | 5×13mm | 6×40mm | 7×27mm | 8×30mm | 9×28mm | 10×40mm | 11×52mm | 17×55mm |
| 3×10mm | 5×14mm | 6×50mm | 7×30mm | 8×35mm | 9×30mm | 10×48mm | 13×50mm | 35×115mm |
| 3×12mm | 5×15mm | 6×60mm | 7×40mm | 8×40mm | 9×40mm | 10×50mm | 13×82mm | 35×135mm |


Detailed Description: Maximizing Surface Contact & Flow Dynamics
In industrial compounding and fast-paced laboratory testing, choosing the right bar shape is critical. While stir bars with center pivot rings are great for reducing friction on curved glass floors, they often fail when you need maximum bottom-scraping agitation.
The HAI JU C-type cylindrical magnetic stir bar is completely flat along its length, allowing it to sit flush against the bottom of flat-bottomed beakers, carboys, and culture flasks. However, what sets the HAI JU design apart is its advanced polygonal, multi-faceted surface structure. Instead of a perfectly smooth cylinder, this multi-angled profile acts as a fluid disruptor. As the bar rotates, these micro-facets constantly interrupt the liquid's laminar flow, converting it into localized micro-turbulences. This unique geometry ensures deep vertical dispersion and faster material dissolution without having to crank up your laboratory hotplate mixer to dangerously high, splash-prone RPMs.
Core Features & Technical Advantages
Polygonal Surface Aggression: The multifaceted cylindrical shape shears through thick liquids easily, making it highly superior for semi-fluid stirring and dissolving granular solids.
Maximum Bottom Contact: Designed without a center pivot ring to ensure complete baseline sweeping, preventing heavy precipitates or dense polymers from settling at the bottom of your container.
Unrivaled Neodymium Magnetism: Houses a high-coercivity NdFeB core magnet that establishes an unbreakable magnetic coupling link with your drive plate, preventing annoying spin-outs or decoupling.
Universal Corrosive Resistance: Features a thick, seam-free pure Teflon jacket, serving as a highly effective acid-resistant stir bar and alkali-resistant magnetic stirrer that stands up to aggressive ketones, aromatics, and volatile media.


Technical Specifications
| Item | Specification |
| Brand Name | HAI JU |
| Product Name | Magnetic Stirrer Bar - C Type (Cylindrical, without Pivot Ring) |
| Internal Material | NdFeB magnet |
| External Material | PTFE/Teflon |
| Temperature Resistant | -200~110℃ |
| Place of Origin | Zhejiang Province, China |
Deep-Dive Material Expertise & Cross-Contamination Prevention
In high-stakes pharmaceutical synthesis and trace environmental analysis, background pollution from equipment degradation is a persistent risk. Poorly manufactured stir bars often contain porous or thin coatings that trap residues or leach trace elements over time.
HAI JU prevents this by utilizing an advanced isothermal molding technique to secure a perfectly uniform, non-porous PTFE barrier over the powerful NdFeB core. This premium exterior layer is entirely non-adhesive. Sticky organic lipids, stubborn chemical pigments, and volatile proteins are instantly repelled by the smooth Teflon structure. Cleaning requires a simple solvent rinse, ensuring zero cross-contamination and 100% data integrity across sequential, multi-batch laboratory assays.
Broad Multi-Industry Applications
Chemical Manufacturing & Refining: Engineered specifically to handle intense chemical reagent stirring tasks, standing up to concentrated mineral acids, strong alkaline systems, and corrosive halogenated hydrocarbons without swelling.
Pharmaceutical Synthesis & Clinical Labs: Meets international regulatory standards for contact safety; non-adsorbent and biologically inert, it is ideal for sterile drug compounding and high-purity molecular mixing.
Industrial Product Development: Perfectly balanced to manage viscous multi-phase systems, paint pigments, or solutions embedded with solid fibers and particulates without decoupling.
Food Science & Regulatory Testing: Guarantees clean, contaminant-free processing for thick syrups, heavy dairy lipids, and artificial colorings during routine quality control checks.
Strategic Commercial Value for B2B Wholesalers & Distributors
By establishing a direct factory sourcing line with the HAI JU manufacturing plant in Zhejiang, global business procurement managers and laboratory equipment suppliers unlock immense competitive advantages:
Unbeatable Factory-Direct Pricing: By eliminating third-party international brokers and domestic trading agents, you secure the lowest baseline manufacturing costs, instantly boosting your wholesale markup margins.
Low MOQ Flexibility: HAI JU supports smaller regional laboratory suppliers by offering flexible, low minimum order quantities, keeping your cash flow agile and reducing warehouse inventory overheads.
Tailored Engineering & Customization: Need an extra-long cylinder or a specific facet layout for a custom automated testing setup? HAI JU provides complete design freedom, adjusting shape, length, and magnetic grades to your exact specifications.
Seamless Cross-Border Shipping Support: Backed by over 14 years of expert international trade experience, HAI JU coordinates rapid, duty-compliant express shipping for samples and highly efficient ocean freight directly to your hubs in Europe and North America.
Frequently Asked Questions (FAQ)
Q1:How about the payment?
A1:1. Amount less than $1000, You can pay for the order by Paypal, western Union;
2. Amount more than $1000, You can pay for the order by T/T;
3. Alibaba trade assurance paid;
Q2:How about the delivery time?
A2:1. For Sample order will be prepared within 7 Days;
2.For bulk order, normally,it needs 14-30days, it is based on your quantity;
Q3:How about the shipping?
A3:1. For sample order, it would sent by express company like UPS, Fedex ,TNT ect. We have strong cooperation with them and if you have express collected account, you will no need to pay us;
2.For bulk order, it would sent by sea. We have our cooperation forwarder and you also can use your forwarder;
Q4:How about your after service?
A4:1. Reply within 24 hours;
2. All products will undergo strict quality inspection and good packaging before shipment;
3. If you order a whole box and the damage exceeds 2%, we will replace you next time;
4. Online technical support, operation tutorial videos;
Q5:Why choose us?
A5:1. On-time delivery;
2. More than 14 years of trading experience;
3. Lowest factory price with high quality;
4. Low MOQ for small business;
5. Meet safety standard for Europe and USA;
6. Professional customized technology;
7. Can offer Professional shipping agent to help you send the goods of safe and quickly;
The HAI JU C-type cylindrical magnetic stir bar is completely flat along its length, allowing it to sit flush against the bottom of flat-bottomed beakers, carboys, and culture flasks. However, what sets the HAI JU design apart is its advanced polygonal, multi-faceted surface structure. Instead of a perfectly smooth cylinder, this multi-angled profile acts as a fluid disruptor. As the bar rotates, these micro-facets constantly interrupt the liquid's laminar flow, converting it into localized micro-turbulences. This unique geometry ensures deep vertical dispersion and faster material dissolution without having to crank up your laboratory hotplate mixer to dangerously high, splash-prone RPMs.
Reliable support including installation, calibration, spare parts, and prompt technical response for laboratory equipment.
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Please tell us about your company's advantages and characteristics.
Please tell us about your company's advantages and characteristics.