Product Overview

Tired of sample splashing, erratic vibrations, and incomplete top-to-bottom blending during critical biological assays? The HAI JU cross shape magnetic stirrer bar introduces a highly stable paddle style configuration engineered to overcome the limits of traditional linear stirrers. Fully encapsulated in medical-grade, non-stick virgin Teflon, these heavy-duty PTFE stirrer bars utilize a four-bladed cross design to maximize fluid shearing forces. Powered by an internal high-strength NdFeB permanent magnet, this unique cross shaped magnetic stir bar generates a powerful, ultra-quiet mixing vortex even at very low rotational speeds. Operating flawlessly from -200°C to 110°C, it is the ultimate solution for stable, uniform chemical reagent stirring in sensitive pharmaceutical and life science research.

Detailed Description: Fluid Cutting Mechanics and Low-Speed Stability

In cell culture preparation, biochemical assays, and delicate product development, standard cylindrical magnets present a dual problem: at high speeds, they create harsh turbulence that can shear fragile organic cells; at low speeds, they fail to generate enough lift, leaving heavy particles to settle at the base of the flask.

The HAI JU cross shape magnetic stirrer bar addresses this challenge by multiplying the fluid cutting surfaces. The intersecting four-blade design creates a multi-directional hydrodynamic field. As the bar rotates, each paddle face slices through the fluid layer, shifting the liquid trajectory simultaneously across both horizontal and vertical planes. This localized displacement creates a deep, stable vortex without requiring high RPMs. By distributing the fluid resistance evenly across the four quadrants, the bar self-stabilizes, drastically reducing the baseline wobbling, rattling, and chattering common in narrow-vial environments.

Core Features & Technical Advantages

Enhanced Shearing Force: The four-bladed cross configuration delivers superior mechanical agitation, ensuring thorough top-to-bottom blending for both low and high-viscosity media.
Ultra-Quiet Low-RPM Mixing: Provides excellent, uniform vortex generation at lower rotational speeds, minimizing fluid splashing and protecting sensitive biological samples from degradation.
Anti-Wobble Stability: The symmetrical cross profile balances the magnetic drive forces evenly, eliminating erratic jumping and protecting delicate container floors from frictional wear.
High-Strength NdFeB Magnetic Core: Packed with advanced neo-permanent magnets to guarantee an unbreakable coupling lock with your hotplate drive plate, even during extended heated cycles.



Technical Specifications

Deep-Dive Material Expertise & Cross-Contamination Prevention

When performing precision chemical synthesis or sterile drug compounding, background contamination from your mixing tools is a massive hidden risk. Low-grade polymers can leach toxic trace materials into your reagents, while rough surfaces trap residual particles that spoil subsequent testing batches.

HAI JU eliminates these variables by utilizing an advanced isothermal compression molding process. Every cross shaped magnetic stir bar is seamlessly encased in a pure, non-porous PTFE jacket. This premium armor acts as an acid-resistant stir bar and alkali-resistant magnetic stirrer that remains entirely non-reactive with aggressive media. Because the surface is completely non-stick, complex proteins, oily lipids, and intense pigments are easily repelled. A basic solvent wash returns the bar to a zero-carryover state, securing absolute cross-contamination protection and total data integrity across multi-user laboratory environments.

Broad Multi-Industry Applications

Life Science & Lab Research: Perfect for sensitive cell cultures, protein suspensions, and biochemical assays where stable, low-speed, high-uniformity mixing is mandatory.
Pharmaceutical Synthesis: Meets international cleanroom contact safety standards; completely non-leaching and non-adsorbent, making it safe for high-purity and sterile drug compounding.
Chemical Industry Reagent Stirring: Handles prolonged contact with concentrated mineral acids, strong bases, volatile organic aromatics, and halogenated hydrocarbons without swelling or splitting.
Food Testing & Quality Control: Facilitates clean, residue-free blending of viscous food colorings, thick dairy lipids, and concentrated syrups without inducing sample aeration.
Petrochemical Processing: Withstands continuous exposure to corrosive media like hydrogen sulfide and heavy petroleum distillates under extreme temperature variations.

Strategic Commercial Value for B2B Wholesalers & Distributors

Sourcing laboratory consumables directly from the HAI JU production facility in Zhejiang provides global procurement managers, niche lab suppliers, and wholesalers with a massive competitive edge:
Direct Factory Price Advantage: By eliminating international brokers and domestic trading middlemen, you secure the lowest baseline manufacturing costs, instantly expanding your local market profit margins.
Low MOQ Business Flexibility: HAI JU reduces your cash flow pressure by offering flexible, low minimum order quantities, allowing you to stock diverse technical shapes without heavy upfront capital investments.
Comprehensive Customization Support: Need custom dimensions, altered blade angles, or a specialized extra-strong magnetic core for automated mixing equipment? HAI JU offers complete engineering freedom.
Fourteen Years of Global Logistics Expertise: Backed by 14+ years of cross-border trade experience, HAI JU guarantees fast sample delivery, secure packaging, and smooth ocean or express air freight direct to your regional hubs.

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;