---
product_id: 46243907
title: "PTFE Magnetic Stirrer Mixer Stir Bars White Color,Olive Shape, (Diameter 8mm,Length 20mm),Pack of 10pcs"
brand: "bbtcty"
price: "R527"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Bbtcty"
url: https://www.desertcart.co.za/products/46243907-ptfe-magnetic-stirrer-mixer-stir-bars-white-color-olive-shape
store_origin: ZA
region: South Africa
---

# Temp resistant -190°C to 250°C 8mm x 20mm olive shape precision Strong magnetic stability & high RPM PTFE Magnetic Stirrer Mixer Stir Bars White Color,Olive Shape, (Diameter 8mm,Length 20mm),Pack of 10pcs

**Brand:** bbtcty
**Price:** R527
**Availability:** ✅ In Stock

## Summary

> 🧪 Stir smarter, not harder — mix like a pro with PTFE precision!

## Quick Answers

- **What is this?** PTFE Magnetic Stirrer Mixer Stir Bars White Color,Olive Shape, (Diameter 8mm,Length 20mm),Pack of 10pcs by bbtcty
- **How much does it cost?** R527 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/46243907-ptfe-magnetic-stirrer-mixer-stir-bars-white-color-olive-shape)

## Best For

- bbtcty enthusiasts

## Why This Product

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

## Key Features

- • **Safe & non-toxic:** Biocompatible PTFE material ensures no contamination or adhesion during use
- • **Lab-grade durability:** Engineered from PTFE for unmatched chemical & temperature resistance
- • **Precision mixing power:** Olive shape and optimal size deliver superior vortex and mixing efficiency
- • **Silent & smooth operation:** High magnetic strength enables quiet stirring up to 400 RPM without spin-out
- • **Unmatched chemical resilience:** Resistant to strong acids, alkalis, and organic solvents for versatile lab use

## Overview

This pack of 10 PTFE magnetic stir bars features an olive shape measuring 8mm diameter by 20mm length, designed for professional lab and industrial mixing. Crafted from chemically inert, non-toxic polytetrafluoroethylene, they withstand extreme temperatures from -190°C to 250°C and resist strong acids, alkalis, and solvents. Their strong magnetic core supports high-speed stirring up to 400 RPM with minimal noise and no adhesion, making them a reliable, long-lasting choice for precise, efficient mixing.

## Description

1.Name: Polytetrafluoroethylene Magnetic Stir Bars 2.Size: 8*20mm 3.Shape: Olives Shape 4.High temperature: the use of operating temperature up to 250 ¡æ 5.Corrosion resistance: for most chemicals and solvents, showing inert, strong acid and alkali resistance, water and a variety of organic solvents 6.High lubrication: the lowest coefficient of friction in solid materials 7. Low temperature resistance: good mechanical toughness, even if the temperature dropped to -196 ¡æ, can also maintain a 5% elongation 8.No adhesion: with the smallest surface tension in the solid material, no adhesion to any substance 9.Weather resistance: long-term exposure to the atmosphere, the surface and performance remain unchanged, there is B06B plastic in the best aging life 10.Non-toxic: with physiological inertia, as artificial blood vessels and organs long-term implanted in vivo no adverse reactions

Review: Better than a Similar, Much More $, Stirrer - I bought the Cole-Parmer 37130-9003 Egg-Shaped Stir Bar, 3" L x 3/4" Dia; 1/Pk in April for $43.83. And it has worked well. But when I couldn't find it last week (since found), I ordered this very similar stir bar. Hands down, this iitem performs better. It's heavier, bigger, and thus mixes more. This magnet is significantly stronger. It will move itself to the magnetic center above the magnetic stirrer if the I place it anywhere close to that location. Also, this stir bar can handle a significantly faster rate of rotation per minute without spinning out. I got it up to 400 RPM, mixing lye into 4L of water, and had no interest in going any faster. I am assuming this stir bar will last for a good while, given the material of its composition. I will report back if any problems arise in that regard. At the moment, I am tickled pink. Update: This stirrer is also significany quieter than other stir bars I have used. Once it gets up to speed, I have to look at the surface of the liquid being stirrer to verify that it is being stirred. I received no compensation or benefit for this review.
Review: Vortex drinking water - These are extra "pills" for my magnetic stirrer, Perfect for my needs, I use them to vortex oxygen into my drinking water, also I use them for stirring my coffee, I use powdered milk and a tablespoon of honey, and these are the perfect size for a coffee cup, ads oxygen to my coffee also! Water Vortex machines can cost hundreds of dollars, but these magnetic stirrers are cheap and do exactly the Same thing!!!

## Features

- Size:Diameter 8mm (0.32 inch )* Length 20mm (0.8 inch)
- Shape: Olives Shape,Number of Items: 10 pcs,Strong acid and alkali resistance for most chemical solvents
- Material PTFE (Polytetrafluoroethylene); Color: pure white,
- Low temperature drops to -190 degrees, High temperature up to 250 degrees
- Non-toxic,No adhesion,High /Low temperature resistance,Weather resistance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07461T2PR |
| Best Sellers Rank | #28,986 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Lab Stirrer Bars |
| Brand | BBTCTY |
| Brand Name | BBTCTY |
| Color | 8X20mm,10pcs |
| Customer Reviews | 4.2 out of 5 stars 158 Reviews |
| Manufacturer | BBTCTY |
| Material | Polytetrafluoroethylene |
| Material Type | Polytetrafluoroethylene |
| Number of Pieces | 10 |
| Shape | Cylindrical |
| UPC | 723740419856 |
| Unit Count | 10.0 Count |

## Product Details

- **Material:** Polytetrafluoroethylene
- **Brand:** BBTCTY
- **Color:** 8X20mm,10pcs
- **Shape:** Cylindrical
- **Number of Pieces:** 10

## Images

![PTFE Magnetic Stirrer Mixer Stir Bars White Color,Olive Shape, (Diameter 8mm,Length 20mm),Pack of 10pcs - Image 1](https://m.media-amazon.com/images/I/81SY4jpb8iL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Better than a Similar, Much More $, Stirrer
*by D***R on May 30, 2024*

I bought the Cole-Parmer 37130-9003 Egg-Shaped Stir Bar, 3" L x 3/4" Dia; 1/Pk in April for $43.83. And it has worked well. But when I couldn't find it last week (since found), I ordered this very similar stir bar. Hands down, this iitem performs better. It's heavier, bigger, and thus mixes more. This magnet is significantly stronger. It will move itself to the magnetic center above the magnetic stirrer if the I place it anywhere close to that location. Also, this stir bar can handle a significantly faster rate of rotation per minute without spinning out. I got it up to 400 RPM, mixing lye into 4L of water, and had no interest in going any faster. I am assuming this stir bar will last for a good while, given the material of its composition. I will report back if any problems arise in that regard. At the moment, I am tickled pink. Update: This stirrer is also significany quieter than other stir bars I have used. Once it gets up to speed, I have to look at the surface of the liquid being stirrer to verify that it is being stirred. I received no compensation or benefit for this review.

### ⭐⭐⭐⭐⭐ Vortex drinking water
*by W***E on September 3, 2025*

These are extra "pills" for my magnetic stirrer, Perfect for my needs, I use them to vortex oxygen into my drinking water, also I use them for stirring my coffee, I use powdered milk and a tablespoon of honey, and these are the perfect size for a coffee cup, ads oxygen to my coffee also! Water Vortex machines can cost hundreds of dollars, but these magnetic stirrers are cheap and do exactly the Same thing!!!

### ⭐⭐⭐⭐⭐ Great product, zero issues
*by W***S on July 5, 2025*

Why did you pick this product vs others?: great when you have a lot of sediment to stir in your extraction that causes typical stir bars to become over encumbered and pause, no longer stirring. Soap nuts, arnica, ashwaghanda even zinc oxide is no challenge for these stir bars, provided you have the right amount of transport medium/solvent (Water, alcohol or oil)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-06*