Can these be autoclaved?

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

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

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

is there any possibilities that these could degrade and leak into the water? any easy way to see it? thanks

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.

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Description

🧪 Stir up success with precision and power!

BULK PACK ADVANTAGE - 8-pack ensures you never run out during critical experiments or batch processes.
VERSATILE LAB ESSENTIAL - Compatible with all standard magnetic stirrers—perfect for research, academia, and industry.
PRECISION MAGNETIC POWER - Engineered with premium magnetic steel for stable, wobble-free stirring every time.
SEAMLESS SMOOTH ROTATION - Cylindrical, burr-free design minimizes friction for consistent, efficient mixing.
HEAT CORROSION RESILIENCE - PTFE material endures high temperatures and harsh chemicals without degradation.

The Weewooday 8-Piece PTFE Magnetic Stirrer Set features 30 mm cylindrical bars crafted from durable PTFE and high-quality magnetic steel. Designed for high-temperature resistance and smooth, stable rotation, these stir bars are ideal for scientific research, industrial labs, and academic settings. Compatible with most magnetic stirrers, this 8-pack offers reliable, corrosion-resistant mixing performance to keep your experiments flowing flawlessly.

Reviews

A**N

Nice product

Good product, prompt delivery!

4.10.2023

K**D

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

19.05.2023

G**N

No problem

31.01.2025

J**E

These are perfect for mixing things in our lab. They work great with the magnetic stirring plate.

11.02.2026

T**Z

Does the job for magnetic stirring at a decent price. Handles autoclaving temp 250C no prob.

30.10.2024

R**S

I use these to make my plant tissue culture media and to help clean my explants and they work well, maybe better than the one that came with my stirrer... They're just a little bit longer. Helpful to have extra so I don't have to pull them out and clean them between steps.

9.08.2025

F**Y

Works great with our stirrer for vanilla.

27.01.2026

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ASIN	B08L3KXRCB
Brand Name	Weewooday
Color	white
Customer Reviews	4.7 4.7 out of 5 stars (723)
Item Dimensions L x W x Thickness	30L x 30W x 30Th millimeters
Item Thickness	30 Millimeters
Manufacturer	Weewooday
Material Type	Polytetrafluoroethylene and steel
Model Number	Weewooday-PTFE Magnetic Stirrer-01
Number of Pieces	8
Part Number	Weewooday-PTFE Magnetic Stirrer-01
Shape	Cylindrical
Unit Count	8 Count

Weewooday 8-Piece 30 mm/ 1.18 Inch PTFE Magnetic Stirrer Mixer, White Color, Stir Rod Magnetic, Laboratory Bar, Stir Plate Magnet

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