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 16 Pieces PTFE Magnetic Stir Bar Lab Stirrer,30 Mm/ 1.18 Inch

Product ID: 277320586

Details

Brand
Weewooday
Color
white
Material
Product Dimensions
0.31"W x
Shape
Cylindrical

🧲30mm precision magnetic core

⚙️Stable rotation, no speed deviation

🛡️PTFE resists corrosion & abrasion

142.26 DT

Duties & taxes included

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Description

🧪 Stir Smarter, Not Harder: The Magnetic Mix That Means Business

PRECISION MIXING - Cylindrical, burr-free design ensures smooth, stable rotation—no wobble, no deviation.
LAB GRADE DURABILITY - Engineered with PTFE and premium magnetic steel for unmatched corrosion and abrasion resistance.
MULTIPURPOSE MASTERY - Ideal for scientific research, industrial labs, universities, and agricultural applications alike.
VALUE PACK ADVANTAGE - Four 30mm stir bars included—ready to elevate your mixing game without interruption.
UNIVERSAL COMPATIBILITY - Seamlessly pairs with all standard magnetic stirrers and heating plates for versatile lab use.

The Weewooday 4 Pieces PTFE Magnetic Stir Bar set features 30mm cylindrical bars crafted from corrosion-resistant PTFE and high-quality magnetic steel. Designed for stable, smooth rotation without speed deviation, these stir bars are compatible with a wide range of magnetic and heating stirrers, making them essential for labs, universities, and industrial research. This pack of four ensures continuous, reliable mixing performance across diverse scientific and agricultural applications.

Specifications

ASIN	B08P3JKLSJ
Best Sellers Rank	#5,371 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Lab Stirrers, Mixers & Accessories
Brand Name	Weewooday
Color	white
Customer Reviews	4.7 4.7 out of 5 stars (1,703)
Item Dimensions L x W x Thickness	0.31"W x 0.31"Th
Item Highlight	Stainless Steel Laboratory Ptfe Stirrer Plate Bar, Pill-shaped Mixing Plate Magnetic Stick, Laboratory Use, White Color
Item Thickness	0.31 inches
Manufacturer	Weewooday
Material Type	Polytetrafluoroethylene
Model Number	Weewooday-PTFE Magnetic Stirrer-01
Number of Items	4
Number of Pieces	4
Part Number	Weewooday-PTFE Magnetic Stirrer-01
Shape	Cylindrical
Unit Count	4 Count

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