Toolly Magnetic Stir Bars PTFE Lab Spinbar 7mm x 25mm Pack of 10

Description

Product Overview

Toolly PTFE magnetic stir bars are engineered to meet the demanding requirements of modern research laboratories. Each bar measures 7 mm in diameter and 25 mm in length, providing a compact yet powerful magnetic core that fits easily into standard flat‑bottom vessels. The PTFE (polytetrafluoroethylene) coating offers exceptional chemical resistance, allowing the stir bars to withstand strong acids, bases, and a broad spectrum of organic solvents without degradation. This inert surface also minimizes the risk of sample contamination, a critical factor for high‑precision analytical work. The recessed bezel design reduces vibration during operation, ensuring a stable and uniform stirring action that protects delicate samples and prolongs the life of magnetic stir plates. With a pack of ten bars, laboratories can maintain continuous workflow across multiple stations, reducing downtime caused by lost or damaged stir bars. The product dimensions of 5.91 × 3.94 × 0.79 inches and a lightweight 0.35 oz per bar make storage and handling effortless. Manufactured by Puyi, a trusted name in laboratory equipment, these stir bars have earned a 4.6‑star rating from over a hundred verified users, reflecting their reliability and performance in real‑world applications.

Usage

These magnetic stir bars excel in a variety of laboratory settings, from routine chemistry titrations to advanced biological assays. Their small size makes them ideal for mixing limited‑volume samples, such as micro‑scale reactions, enzyme kinetics studies, and environmental testing where precise agitation of a few milliliters is required. The PTFE surface ensures compatibility with corrosive reagents, enabling use in acid digestion procedures, alkaline extractions, and solvent‑based extractions without compromising the integrity of the stir bar. Researchers in pharmaceutical development, analytical chemistry, and life sciences can rely on the consistent magnetic coupling provided by the 7 mm diameter, which delivers steady turbulence even at low stir plate speeds. The bars are also suitable for educational laboratories, where durability and ease of cleaning are essential. Simply rinse with appropriate solvents after use, and the PTFE coating will resist buildup, allowing the stir bar to be reused many times. Their universal size fits most standard magnetic stir plates, making them a versatile addition to any lab’s inventory.

Why Choose Us

Choosing Toolly means selecting a product backed by rigorous quality control and a commitment to scientific excellence. Each stir bar undergoes a multi‑stage inspection process that verifies magnetic strength, dimensional accuracy, and PTFE coating integrity. The manufacturing process adheres to ISO‑9001 standards, ensuring that every batch meets consistent performance criteria. Toolly provides comprehensive documentation, including material safety data sheets (MSDS) and detailed usage guidelines, to help users integrate the stir bars safely into their protocols. In addition, the company offers responsive technical support, with a dedicated team ready to answer questions about compatibility, cleaning procedures, and optimal stir plate settings. Customers benefit from a hassle‑free return policy and a warranty that covers manufacturing defects, reflecting confidence in product durability. By investing in Toolly stir bars, laboratories gain a reliable tool that reduces experimental variability, improves reproducibility, and ultimately contributes to more accurate scientific outcomes.

Key Features

• PTFE coating provides superior chemical resistance to acids, bases, and organic solvents.
• Compact 7 mm diameter and 25 mm length fit easily into small‑volume containers.
• Recessed bezel design minimizes vibration for smoother, more consistent stirring.
• Pack of ten bars ensures continuous operation across multiple workstations.
• Dedicated technical support and warranty for reliable after‑sales service.

FAQ

What types of solvents are the stir bars compatible with?

The PTFE coating is resistant to a wide range of solvents, including strong acids like hydrochloric and sulfuric acid, bases such as sodium hydroxide, and organic solvents like methanol, ethanol, acetone, and chloroform. This makes the stir bars suitable for most laboratory applications.

Can the stir bars be used with any magnetic stir plate?

Yes, the 7 mm diameter magnetic core is designed to work with standard laboratory magnetic stir plates. It provides reliable magnetic coupling even at low speeds, ensuring consistent agitation across different brands and models.

How should I clean the stir bars after use?

Rinse the stir bars with a suitable solvent that matches the chemicals used in your experiment. For most applications, a simple wash with distilled water followed by a brief soak in isopropyl alcohol is sufficient. The PTFE coating resists buildup, allowing easy cleaning and reuse.

What is the benefit of the recessed bezel design?

The recessed bezel reduces the transmission of vibration from the stir plate to the sample, resulting in smoother stirring and less disturbance of delicate reactions. This design also helps to protect the magnetic core from mechanical wear.

Is there a warranty or guarantee for these stir bars?

Toolly offers a one‑year warranty covering manufacturing defects. If a stir bar fails due to a defect, the company will replace it at no additional cost, ensuring continuous laboratory productivity.