---
product_id: 415303104
title: "Weewooday 24 Pieces PTFE Magnetic Stir Bar Lab Stirrer,35 Mm/ 1.38 Inch | Stainless Steel Laboratory Ptfe Stirrer Plate Bar, Pill-shaped Mixing Plate Magnetic Stick, Laboratory Use, White Color"
brand: "weewooday"
price: "$61.68"
currency: USD
in_stock: true
reviews_count: 13
category: "Weewooday"
url: https://www.desertcart.us/products/415303104-weewooday-24-pieces-ptfe-magnetic-stir-bar-lab-stirrer-35
store_origin: US
region: United States of America
---

# Strong magnetic force for stable stirring Precision-engineered smooth rotation, no deviation Durable PTFE coating resists corrosion & abrasion Weewooday 24 Pieces PTFE Magnetic Stir Bar Lab Stirrer,35 Mm/ 1.38 Inch | Stainless Steel Laboratory Ptfe Stirrer Plate Bar, Pill-shaped Mixing Plate Magnetic Stick, Laboratory Use, White Color

**Brand:** weewooday
**Price:** $61.68
**Availability:** ✅ In Stock

## Summary

> 🧪 Stir Smarter, Not Harder – Elevate Your Lab Game with Weewooday!

## Quick Answers

- **What is this?** Weewooday 24 Pieces PTFE Magnetic Stir Bar Lab Stirrer,35 Mm/ 1.38 Inch | Stainless Steel Laboratory Ptfe Stirrer Plate Bar, Pill-shaped Mixing Plate Magnetic Stick, Laboratory Use, White Color by weewooday
- **How much does it cost?** $61.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/415303104-weewooday-24-pieces-ptfe-magnetic-stir-bar-lab-stirrer-35)

## Best For

- weewooday enthusiasts

## Why This Product

- Trusted weewooday brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Pack Advantage:** 24-piece set keeps your lab fully stocked and ready for any experiment
- • **Premium PTFE Coating:** Chemical-resistant surface guarantees longevity and purity in every mix
- • **Versatile Compatibility:** Perfectly pairs with all standard magnetic stirrers and heating plates
- • **Unmatched Magnetic Power:** Ensures consistent, centered stirring even at high speeds
- • **Optimized Size for Efficiency:** 35mm pill-shaped bars ideal for 32oz cultures and various container sizes

## Overview

The Weewooday 24-piece PTFE Magnetic Stir Bar set features 35mm pill-shaped bars crafted from durable PTFE and strong magnetic steel. Designed for smooth, stable rotation without deviation, these corrosion-resistant stir bars excel in scientific research, industrial, and agricultural labs. Compatible with most magnetic and heating stirrers, this bulk pack ensures reliable, long-lasting performance for mixing liquids up to 32oz with ease.

## Description

Weewooday 24 Pieces PTFE Magnetic Mixer Stirrer Bar, White Color Stainless Steel Laboratory PTFE Stir Plate Bar, Mixing Plate Magnet Stick (35 Mm/ 1.38 Inch): desertcart.com: Industrial & Scientific

Review: Perfect - These little stir bars work perfectly, they spin quietly, stay centered, and the PTFE coating feels durable. The different sizes make it easy to match whatever beaker or container you’re using. Great value for a reliable set.
Review: Stirs 32oz Liquid Culture easy peasy. - They are large enough to stir 32oz LCs on low to medium. They also work with smaller jars (1pint). They are strongly magnetic and the coating holds up to daily stirring. I havent had any issues with Sterilizing them or the coating pitting. They work well with my basic small stir plate.

## Features

- Features: magnetic stir bar can resist , corrosion, abrasion and high rotational forces, and has the properties of fine workmanship, no impurities and burrs on the surface, stable speed and no deviation
- Quality material: PTFE magnetic stirrer is made of PTFE and quality magnetic steel, and the cylindrical shape and smooth surface will reduce friction and improve smooth rotation
- More other applications: laboratory bar is widely applied in scientific research, universities, laboratories in the industrial and agricultural sectors, and also can be applied to stir mixed substances
- Widely applicable: stir plate magnet bar will work well with various types of magnetic stirrers or heating stirrers
- Package includes: comes with PTFE magnetic stir bars in our package, all of them are 35 mm/ 1.38 inch

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B093T4J2R5 |
| Best Sellers Rank | #5,370 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Lab Stirrers |
| Brand | Weewooday |
| Brand Name | Weewooday |
| Color | white |
| Customer Reviews | 4.7 out of 5 stars 1,697 Reviews |
| Item Dimensions L x W x Thickness | 1.38"L x 1.38"W x 0.31"Th |
| Item Thickness | 0.31 inches |
| Manufacturer | Weewooday |
| Material | Polytetrafluoroethylene |
| Material Type | Polytetrafluoroethylene |
| Model Number | Weewooday-PTFE Magnetic Stirrer-01 |
| Number of Pieces | 24 |
| Part Number | Weewooday-PTFE Magnetic Stirrer-01 |
| Product Dimensions | 1.38"L x 1.38"W x 0.31"Th |
| Shape | Cylindrical |
| Unit Count | 24 Count |

## Product Details

- **Brand:** Weewooday
- **Color:** white
- **Material:** Polytetrafluoroethylene
- **Product Dimensions:** 1.38"L x 1.38"W x 0.31"Th
- **Shape:** Cylindrical

## Images

![Weewooday 24 Pieces PTFE Magnetic Stir Bar Lab Stirrer,35 Mm/ 1.38 Inch | Stainless Steel Laboratory Ptfe Stirrer Plate Bar, Pill-shaped Mixing Plate Magnetic Stick, Laboratory Use, White Color - Image 1](https://m.media-amazon.com/images/I/61tWdR9AwvS.jpg)
![Weewooday 24 Pieces PTFE Magnetic Stir Bar Lab Stirrer,35 Mm/ 1.38 Inch | Stainless Steel Laboratory Ptfe Stirrer Plate Bar, Pill-shaped Mixing Plate Magnetic Stick, Laboratory Use, White Color - Image 2](https://m.media-amazon.com/images/I/61ejEhj4GvS.jpg)
![Weewooday 24 Pieces PTFE Magnetic Stir Bar Lab Stirrer,35 Mm/ 1.38 Inch | Stainless Steel Laboratory Ptfe Stirrer Plate Bar, Pill-shaped Mixing Plate Magnetic Stick, Laboratory Use, White Color - Image 3](https://m.media-amazon.com/images/I/71h3yLTRHKL.jpg)
![Weewooday 24 Pieces PTFE Magnetic Stir Bar Lab Stirrer,35 Mm/ 1.38 Inch | Stainless Steel Laboratory Ptfe Stirrer Plate Bar, Pill-shaped Mixing Plate Magnetic Stick, Laboratory Use, White Color - Image 4](https://m.media-amazon.com/images/I/71Z8uYP3mRL.jpg)
![Weewooday 24 Pieces PTFE Magnetic Stir Bar Lab Stirrer,35 Mm/ 1.38 Inch | Stainless Steel Laboratory Ptfe Stirrer Plate Bar, Pill-shaped Mixing Plate Magnetic Stick, Laboratory Use, White Color - Image 5](https://m.media-amazon.com/images/I/71J8U4ykWoL.jpg)

## Available Options

This product comes in different **Size, Number Of Items** options.

## Questions & Answers

**Q: Can these be autoclaved?**
A: I would have to assume so. They’re scientific instruments. Generally, with a few exceptions, there designed to be regularly sterilized.
I regularly send mine through a pressure cooker at 15 PSI in liquid cultures

**Q: Could these be used with a sensor for an alarm system (Simplisafe)?  I have double hung windows so need a slim magnet to put opposite the sensor. Thx**
A: Probably, but I suspect it would be much easier to use one of these that's the size you want: https://www.amazon.com/s?k=neodymium+disc+magnets&crid=3RBE9SKKGYW9W&sprefix=Neodyn%2Caps%2C235&ref=nb_sb_ss_ts-doa-p_5_6

**Q: is there any possibilities that these could degrade and leak into the water? any easy way to see it? thanks**
A: There is nothing to leak. Inside is a solid magnet. It's possible that after using them a long time, friction could wear out the plastic coating, but that will probably take years and you'll see it slowly degrading. Just take a quick glance before you use them and if they look like they are in good condition, they are.

**Q: Is there a "flat" side of the magnet, or are both sides curved?**
A: Both sides are curved.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect
*by X***A on June 7, 2026*

These little stir bars work perfectly, they spin quietly, stay centered, and the PTFE coating feels durable. The different sizes make it easy to match whatever beaker or container you’re using. Great value for a reliable set.

### ⭐⭐⭐⭐⭐ Stirs 32oz Liquid Culture easy peasy.
*by J***T on May 13, 2026*

They are large enough to stir 32oz LCs on low to medium. They also work with smaller jars (1pint). They are strongly magnetic and the coating holds up to daily stirring. I havent had any issues with Sterilizing them or the coating pitting. They work well with my basic small stir plate.

### ⭐⭐⭐⭐⭐ Reasonabley Priced, Exactly as Advertised
*by M***T on June 3, 2026*

Exactly as advertised.

## Frequently Bought Together

- Weewooday 24 Pieces PTFE Magnetic Mixer Stirrer Bar, White Color Stainless Steel Laboratory PTFE Stir Plate Bar, Mixing Plate Magnet Stick (35 mm/ 1.38 Inch)
- INTLLAB Magnetic Stirrer Stainless Steel Magnetic Mixer with stir bar (No Heating) Max Stirring Capacity: 3000ml
- 50ml Beaker, Low Form Griffin, Borosilicate 3.3 Glass, Double Scale, Graduated, Karter Scientific 213D31 (Single)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-11*