Product Overview

Tired of weak vortexes, dead zones, and unmixed precipitates in large-volume or viscous samples? The HAI JU double cross shape magnetic stirrer bar introduces a radical shift from standard linear designs to solve these exact processing challenges. Fully encapsulated in high-purity virgin Teflon, these high-performance PTFE stirrer bars feature a unique multi-directional cross configuration that functions as a double-paddle mixer. Powered by an internal rare-earth NdFeB permanent magnet, this specialized double cross magnetic stir bar generates highly turbulent flow profiles for intensive chemical reagent stirring and demanding semi-fluid stirring environments. Operating reliably from -200°C to 110°C, it delivers deep, uniform mixing without spin-outs or decoupling.

Detailed Description: Mastering Fluid Cutting & High-Volume Agitation

In industrial product development and high-capacity laboratory testing, traditional cylindrical stir bars struggle when fluid viscosity increases or container volumes scale up. A straight bar simply slides through dense media, creating a weak laminar ring that leaves solid particles settled at the outer margins of the vessel floor.

The HAI JU double cross shape magnetic stirrer bar overcomes these limitations through its integrated four-blade structural geometry. When spinning, the dual intersecting axes establish multiple fluid cutting surfaces that slash through thick liquid layers simultaneously. This design mimics the mechanical action of an overhead laboratory paddle mixer but operates entirely via magnetic induction. By continuously altering the fluid's flow trajectory, the cross profile pushes liquids upward and outward at the same time, generating a massive, stable double paddle vortex that pulls heavy materials back into the active mixing zone.

Core Features & Technical Advantages

Multi-Directional Fluid Cutting: The unique double-cross profile splits fluid currents across vertical and horizontal planes, eliminating dead zones and maximizing dispersion efficiency.
Low-Speed High Turbulence: Generates strong, deep mixing vortexes even at lower rotational speeds, preventing sample splashing, heat buildup, and excessive aeration.
Anti-Settling Design: Constantly sweeps the boundary layer of flat-bottomed containers to keep heavy catalysts, micro-particles, and dense fibers fully suspended.

Unsplittable NdFeB Core: Contains a premium neodymium permanent magnet core that locks tightly with the magnetic drive plate, ensuring seamless synchronization under high fluid drag.



Technical Specifications

Deep-Dive Fluid Mechanics & Material Integrity

When formulating aggressive emulsions, heavy lipids, or complex chemical reagents, the material purity of your mixing tools is vital. Budget magnetic stirrers often degrade under intense mechanical shear, or their coatings warp under high thermal loads, allowing chemical absorption or leaching.

HAI JU solves these critical quality control risks through our precision isothermal molding system. Every double cross magnetic stir bar receives a flawless, uniform layer of high-density virgin PTFE. This medical-grade exterior is entirely non-porous and chemically non-stick. Thick organic oils, industrial pigments, and volatile proteins cannot bind to the smooth Teflon coat. Cleaning requires nothing more than a standard solvent wash, guaranteeing a zero-carryover workflow that completely eliminates cross-contamination risks between consecutive batches.

Broad Multi-Industry Applications

Pharmaceutical & Biotech Synthesis: Fully compliant with strict purity standards; the non-adsorbent surface ensures safe handling of sensitive biological proteins, clinical assays, and sterile drug compounding.

Chemical Processing & Manufacturing: Built specifically for intensive chemical reagent stirring involving concentrated mineral acids, strong alkaline systems, and volatile solvents.

Pilot Product Development: Highly reliable for homogenizing thick semi-fluid stirring systems, blending viscous polymers, suspensions, or solutions loaded with solid fibers.

Food Science & Safety Testing: Prevents separation and ensures thorough blending of dense dairy lipids, concentrated syrups, and artificial food coloring agents.

Petrochemical Engineering: Withstands prolonged, continuous contact with corrosive hydrocarbons, aromatics, high-concentration bases, and hydrogen sulfide without swelling or degrading.

Strategic Commercial Value for B2B Wholesalers & Distributors

Sourcing your lab inventory directly from the HAI JU manufacturing plant in Zhejiang provides global procurement managers and commercial equipment suppliers with immense supply chain benefits:

Direct-from-Factory Pricing: By removing international brokers and domestic trading middlemen, you lock in the lowest baseline 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;