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

Product ID: 294677349

Details

Brand
Weewooday
Colour
white
Material
and steel
Product dimensions
30L x 30W x
Shape
Cylindrical

🔥Heat-resistant PTFE material

🧲8 high-strength magnetic stir bars

⚙️Smooth, low-friction cylindrical design

R981

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Description

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

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

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.

Specifications

ASIN	B08L3KXRCB
Brand Name	Weewooday
Color	white
Customer Reviews	4.7 4.7 out of 5 stars (778)
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 Items	8
Number of Pieces	8
Part Number	Weewooday-PTFE Magnetic Stirrer-01
Shape	Cylindrical
Unit Count	8 Count

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R981

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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