---
product_id: 294677349
title: "8-Piece 30 mm/ 1.18 Inch PTFE Magnetic Stirrer Mixer, White Color, Stir Rod Magnetic, Laboratory Bar, Stir Plate Magnet"
brand: "weewooday"
price: "$30.69"
currency: USD
in_stock: true
reviews_count: 7
category: "Weewooday"
url: https://www.desertcart.us/products/294677349-8-piece-30-mm-1-18-inch-ptfe-magnetic-stirrer
store_origin: US
region: United States of America
---

# Heat-resistant PTFE material 8 high-strength magnetic stir bars Smooth, low-friction cylindrical design 8-Piece 30 mm/ 1.18 Inch PTFE Magnetic Stirrer Mixer, White Color, Stir Rod Magnetic, Laboratory Bar, Stir Plate Magnet

**Brand:** weewooday
**Price:** $30.69
**Availability:** ✅ In Stock

## Summary

> 🧪 Stir Smarter, Not Harder — Elevate Your Lab Game!

## Quick Answers

- **What is this?** 8-Piece 30 mm/ 1.18 Inch PTFE Magnetic Stirrer Mixer, White Color, Stir Rod Magnetic, Laboratory Bar, Stir Plate Magnet by weewooday
- **How much does it cost?** $30.69 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/294677349-8-piece-30-mm-1-18-inch-ptfe-magnetic-stirrer)

## 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 Efficiency:** 8-pack ensures you’re always stocked for multiple experiments or projects
- • **Sleek, Smooth Design:** Cylindrical shape minimizes friction for ultra-smooth, consistent rotation
- • **Precision Mixing Power:** Engineered for stable, deviation-free stirring under high rotational forces
- • **Universal Compatibility:** Seamlessly pairs with most magnetic and heating stirrers in labs and research facilities
- • **Durable Heat & Corrosion Resistance:** PTFE construction withstands extreme temperatures and chemical abrasion

## Overview

The Weewooday 8-Piece PTFE Magnetic Stirrer Set features 30mm cylindrical bars crafted from heat-resistant, corrosion-proof PTFE and quality magnetic steel. Designed for stable, smooth rotation with minimal friction, these stir bars are ideal for scientific research, industrial labs, and academic settings. Compatible with a wide range of magnetic and heating stirrers, this bulk pack ensures reliable, efficient mixing for all your lab needs.

## Description

Product description The stir bar is magnetic, and its two ends have opposite polarities. Compact size allows you to put it in most measuring cups. High lubrication and lowest coefficient of friction in solid material. Instructions Place the magnetic stirrer bar in a beaker, graduated cylinder or other container. Place the container on the platform of the electromagnetic heating stirrer, and then turn on the switch of the electromagnetic heating stirrer. The magnetic stirrer will generate rotational force to drive the substance to rotate quickly. In this way, the substance is completely mixed, and the substance can be concentrated by heating.

Review: Nice product - Good product, prompt delivery!
Review: المغناطيس ضعيف - حجم المغناطيس اكبر بقليل من الحجم العادي و مع هذا نسبة المغناطيسيه به ضعيفة ولم يكن عملي حيث لايدور بشكل المطلوب في الاناء ويقوم برقص بجنون

## Features

- Features: magnetic stir bar can resist high temperatures, 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 8 PTFE magnetic stir bars in 1 package, all of them are 30 mm/ 1.18 inch

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08L3KXRCB |
| Brand | Weewooday |
| Brand Name | Weewooday |
| Color | white |
| Colour | white |
| Customer Reviews | 4.7 out of 5 stars 762 Reviews |
| Item Dimensions L x W x Thickness | 30L x 30W x 30Th millimeters |
| Item Thickness | 30 Millimeters |
| Item thickness | 30 Millimeters |
| Manufacturer | Weewooday |
| Material | Polytetrafluoroethylene and steel |
| Material Type | Polytetrafluoroethylene and steel |
| Model Number | Weewooday-PTFE Magnetic Stirrer-01 |
| Number of Pieces | 8 |
| Part Number | Weewooday-PTFE Magnetic Stirrer-01 |
| Product dimensions | 30L x 30W x 30Th millimeters |
| Shape | Cylindrical |
| Unit Count | 8 Count |

## Product Details

- **Brand:** Weewooday
- **Colour:** white
- **Material:** Polytetrafluoroethylene and steel
- **Product dimensions:** 30L x 30W x 30Th millimeters
- **Shape:** Cylindrical

## Images

![8-Piece 30 mm/ 1.18 Inch PTFE Magnetic Stirrer Mixer, White Color, Stir Rod Magnetic, Laboratory Bar, Stir Plate Magnet - Image 1](https://m.media-amazon.com/images/I/61q1S9BNUEL.jpg)

## 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

### ⭐⭐⭐⭐⭐ Nice product
*by A***N on 4 October 2023*

Good product, prompt delivery!

### ⭐ المغناطيس ضعيف
*by K***D on 19 May 2023*

حجم المغناطيس اكبر بقليل من الحجم العادي و مع هذا نسبة المغناطيسيه به ضعيفة ولم يكن عملي حيث لايدور بشكل المطلوب في الاناء ويقوم برقص بجنون

### ⭐⭐⭐⭐⭐ Perfect
*by X***A on 7 June 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.

## Frequently Bought Together

- Weewooday 8 Pieces PTFE Magnetic Mixer Stirrer Bar, White Color Stainless Steel Laboratory PTFE Stir Plate Bar, Mixing Plate Magnet Stick (30 mm/ 1.18 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: 2026-08-23*