How to choose the right size magnetic stir bar for my flask or beaker?

Match the stir bar length to roughly half to two-thirds of the inner diameter of your vessel's bottom. This ensures efficient stirring without wobbling. The Yizerel set includes bars from 2mm to 35mm, offering versatility for various container sizes, from small vials to larger beakers.

Are these Yizerel PTFE magnetic stir bars safe for use with solvents and acids?

Yes, these stir bars are coated with chemically inert PTFE (Teflon), making them safe for use with most common solvents and acids found in laboratory settings. The coating resists corrosion and reduces friction, ensuring reliable performance.

What is the difference between PTFE and Teflon coated stir bars?

PTFE stands for Polytetrafluoroethylene, which is the chemical name for Teflon. Therefore, PTFE-coated and Teflon-coated stir bars are essentially the same, offering excellent chemical resistance and low friction for laboratory stirring applications.

Can I use these stir bars with a magnetic stirrer hot plate?

While these stir bars are designed for use with magnetic stirrers, their suitability for hot plates depends on the maximum temperature rating of the PTFE coating and the specific hot plate's operating temperature. Always check the product's temperature specifications before use with heated applications.

How to buy authentic Yizerel PTFE magnetic stir bars in India?

Purchase from authorized US retailers and authorized brand partners like CrowCrowCrow. Our products are factory-sealed, imported per-order, and include all customs duties and GST. They are delivered via ExpressBox tracked shipping for your peace of mind.

What are the benefits of using PTFE coated stir bars?

PTFE coating provides excellent chemical inertness, allowing use with corrosive substances. It also reduces friction and wear, leading to smoother, quieter spinning and longer product life compared to uncoated stir bars.

Do these stir bars come with a magnetic stirrer?

No, this product is a set of 10 magnetic stir bars only. A separate magnetic stirrer or magnetic stirrer hot plate is required to operate them. The stir bars are placed inside the liquid container on top of the stirrer.

Yizerel White 10pcs PTFE Magnetic Stirrer Stir Bar Set

Name: Yizerel PTFE Magnetic Stirrer Stir Bars Set (10pcs, 2-35mm) | Essential Lab Consumables
Brand: Yizerel
SKU: kwq2264
Price: 1366.00 INR
Availability: InStock

About this item

Yizerel's 10-piece PTFE magnetic stirrer bar set provides essential stirring solutions for biological, chemical, and research laboratories in India. Each bar is coated with chemically inert Teflon (PTFE), ensuring compatibility with corrosive chemicals and reducing friction for efficient operation. The set includes a variety of sizes and shapes, from 2mm to 35mm, designed to create optimal vortexes for effective mixing in different container volumes.

These stir bars are placed on a magnetic stirrer to create a rotating magnetic field, facilitating smooth and consistent stirring. The strong magnets ensure good coupling with the stirrer, minimizing slippage even in viscous solutions. The PTFE coating not only enhances chemical resistance but also helps reduce wear and tear, prolonging the life of the stir bars during frequent laboratory use.

Imported directly for Indian laboratories, this set offers a cost-effective alternative to local options, with all customs duties and GST pre-paid. Delivered via ExpressBox, you receive authentic, brand-new PTFE stirrer bars ready for immediate use in your research or experimental setups.

Key Features

Used to stir a liquid or solution in biological, chemical, medical and research laboratory applications.
The stir bar is placed inside a container of liquid or solution that is seated on a magnetic stirrer, creating a rotating magnetic field using a rotating magnet or multiple stationary electromagnets.
Stir bars are coated with Teflon (PTFE) covering, which is chemically inert and can be used with corrosive chemicals, also helps reduce friction and wear while spinning
Individual shapes create different vortexes for efficient and effective stirring
Brand new, never used PTFE stirrer bars.

Why choose this product

Precision Stirring for Lab Work

Yizerel PTFE magnetic stirrer bars are engineered for precision in biological, chemical, and research labs. Their inert Teflon coating withstands aggressive chemicals, while varied sizes and shapes create optimal vortexes for efficient mixing. Strong magnetic cores ensure stable rotation, preventing slippage. Imported directly, these bars offer reliable performance comparable to high-end lab equipment, ensuring your experiments run smoothly without interruption.

Ideal for Research & Education

This 10-piece set is perfect for university labs, research institutions, and educational settings requiring versatile stirring tools. While suitable for general lab use, individuals with highly specialized or extremely high-temperature applications might need bars with specific temperature ratings or advanced shapes not included in this assortment. For routine chemical mixing and sample preparation, these bars provide excellent value and performance.

How to use

Choose a stir bar whose length is approximately half to two-thirds the diameter of the bottom of your container. Ensure the bar is clean and free from debris before use. — Select the Appropriate Stir Bar
Carefully place the selected stir bar into the liquid or solution you intend to stir. Ensure it rests flat at the bottom of the container. — Place Stir Bar in Container
Place the container with the stir bar onto the center of your magnetic stirrer or hot plate. Ensure the container is stable and centered. — Position Container on Magnetic Stirrer
Turn on the magnetic stirrer and gradually increase the speed until a smooth, consistent vortex is formed. Avoid excessively high speeds that could cause the stir bar to decouple or spin out. — Activate Stirrer and Adjust Speed

Example scenarios

Typical situations where Yizerel PTFE Magnetic Stirrer Stir Bars Set (10pcs helps — illustrative scenarios, not customer reviews.

Scenario 1

Illustrative example

Where it helps

A research lab in Mumbai needs to stir various chemical solutions, some of which are corrosive.

How this product helps

The Yizerel 10-piece PTFE stir bar set offers bars coated with chemically inert Teflon, ideal for handling corrosive substances. The variety of sizes ensures efficient mixing for different flask volumes, providing reliable performance for daily lab work.

Scenario 2

Illustrative example

Where it helps

A university teaching lab requires a set of stir bars for undergraduate chemistry experiments with different container sizes.

How this product helps

This set provides 10 stir bars ranging from 2mm to 35mm, suitable for various beaker and flask sizes commonly used in teaching labs. The strong magnets ensure consistent stirring, and the durable PTFE coating withstands frequent use.

Specifications

Composition

Coating	PTFE (Teflon)
Core	Magnetic

Usage

Application	Stirring liquids/solutions in biological, chemical, medical, and research laboratory applications.
Usage Frequency	Suitable for frequent laboratory use.
Compatibility	Works with magnetic stirrers; chemically inert with corrosive chemicals.
Cost per use	10 bars at ₹1,366 — ₹137 per bar
Shelf life after opening	12 months (category default for lab consumables)

How we compare

Feature	Yizerel PTFE Magnetic	Others
Coating Material & Chemical Resistance	PTFE (Teflon) coating; inert to most solvents and acids.	Varies by brand; some may offer PTFE, others less resistant coatings. Check specifications carefully.
Size Variety	Set of 10 bars (2mm-35mm) for diverse vessel sizes.	Often sold individually or in smaller sets; size availability varies significantly by supplier.
Magnetic Strength	Strong magnets ensure good coupling and stable stirring.	Magnetic strength can vary; check reviews for consistent coupling performance.
Cost per Unit	10 bars at ₹1,366 — ₹137 per bar	Individual bars can range from ₹100-₹500+, sets vary widely.
Authenticity & Sourcing	Imported from authorized US retailers and brand partners; factory-sealed.	Availability and authenticity can vary; ensure purchase from reputable Indian lab suppliers.

SKU	kwq2264
GTIN	0785197261891
Brand	Yizerel
Color	White
Material	PTFE (Polytetrafluoroethylene)
Item Shape	Cylindrical
Number of Items	10
Dimensions (approximate)	Includes sizes from 2mm x 3mm to 35mm x 9mm
Country of Origin	Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners

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Yizerel PTFE Magnetic Stirrer Stir Bars Set (10pcs, 2-35mm) | Essential Lab Consumables

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