Magnetic Stir Bar YOKIVE 2pcs PTFE Coated Cross & Gear White

Description

Product Overview

The YOKIVE Magnetic Stir Bar set delivers professional‑grade stirring performance in a compact, easy‑to‑use package. Each set includes two PTFE‑coated magnetic stir rods—one gear‑shaped bar measuring 1.54 inches in length and 0.28 inches in diameter, and one cross‑shaped bar measuring 1.57 inches by 0.43 inches. The PTFE coating provides exceptional chemical resistance, allowing the bars to withstand aggressive solvents, acids, and bases without degradation. Temperature tolerance spans from –180 °C to 250 °C, making the bars suitable for cryogenic applications as well as high‑temperature syntheses. The magnetic core is engineered for strong, consistent magnetic coupling, ensuring smooth, silent rotation even at high speeds. The white color of the bars offers visual contrast against most solutions, facilitating easy monitoring of stirring action. Package dimensions are 4 × 3 × 1 inches, weighing just 2.4 ounces, which simplifies storage and handling in busy laboratory environments.

Usage

These stir bars are designed for a broad range of laboratory tasks, from routine solution preparation to complex reaction monitoring. They excel in mixing viscous liquids, suspensions, and heterogeneous mixtures, delivering uniform homogeneity without the need for mechanical agitation. Researchers in chemistry, biochemistry, pharmacology, and materials science can rely on the YOKIVE stir bars for tasks such as solubilizing powders, maintaining temperature‑controlled reactions, and facilitating kinetic studies. The low‑friction PTFE surface reduces wear on magnetic stir plates, extending the life of both the stir bar and the plate. Because the bars are non‑magnetic to ferrous materials, they can be safely stored near metal tools without loss of magnetic properties. Users should avoid placing the bars near strong external magnets or ferrous objects during operation to preserve optimal magnetic coupling.

Why Choose Us

YOKIVE is a trusted brand in laboratory equipment, known for rigorous quality control and reliable performance. Each stir bar undergoes strict testing for magnetic strength, dimensional accuracy, and PTFE coating integrity before leaving the factory. The dual‑shape design—gear and cross—offers flexibility: the gear shape provides rapid stirring for low‑viscosity liquids, while the cross shape delivers enhanced torque for thicker, more resistant solutions. The PTFE coating not only protects against corrosion but also simplifies cleaning; a quick rinse with distilled water removes most residues, and the smooth surface resists buildup of stubborn contaminants. Our commitment to customer satisfaction includes responsive technical support, a clear return policy, and access to replacement parts should any issue arise. By choosing YOKIVE, laboratories benefit from dependable equipment that minimizes downtime and maximizes experimental reproducibility.

Key Features

• PTFE‑coated magnetic core resists corrosion and extreme temperatures for long‑term durability
• Dual‑shape design (gear and cross) adapts to a variety of solution viscosities and stirring speeds
• Quiet operation reduces acoustic disturbance in shared lab spaces
• Compact size and lightweight construction simplify storage and handling
• Responsive customer support and easy replacement parts ensure uninterrupted workflow

FAQ

What temperature range can the stir bars operate in?

The PTFE coating allows the bars to function safely from –180 °C up to 250 °C, covering most cryogenic and high‑temperature laboratory applications.

Are the stir bars compatible with all magnetic stir plates?

Yes, the bars are designed to work with standard laboratory magnetic stir plates. For optimal performance, ensure the stir plate’s magnetic field strength matches the bar size and shape.

How should I clean the stir bars after use?

Rinse the bars with distilled water or an appropriate solvent, then gently wipe with a soft cloth. The PTFE surface prevents most residues from adhering, making cleaning quick and easy.

Can I use the stir bars with ferrous solutions?

While the magnetic core is strong, the bars should not be placed directly in ferrous solutions, as iron can affect magnetic properties. Use them with non‑ferrous liquids for best results.

What should I do if a stir bar loses its magnetic strength?

Contact YOKIVE customer service for troubleshooting. If the bar is defective, we will arrange a replacement under our warranty policy.