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 36 Pieces PTFE Magnetic Stir Bar Lab Stirrer,35 Mm/ 1.38 Inch

Weewooday 36 Pieces PTFE Magnetic Stir Bar Lab Stirrer,35 Mm/ 1.38 Inch

Product ID: 415303104

Details

Brand
Weewooday
Color
white
Material
Magnetic Steel
Product Dimensions
6.5"L x 3.54"W
Shape
Cylindrical

🧲Strong magnetic steel core

⚙️Stable rotation with no deviation

🛡️Durable PTFE corrosion-resistant coating

Description

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

READY TO USE 4 PACK - Multiple 35mm bars included to match your lab containers and scale up your experiments effortlessly.
VERSATILE LAB ESSENTIAL - Perfectly compatible with a wide range of magnetic and heating stirrers across scientific and industrial settings.
PRECISION MAGNETIC POWER - Engineered with premium magnetic steel for consistent, powerful stirring every time.
SMOOTH CYLINDRICAL DESIGN - Minimizes friction and maximizes rotation stability for flawless mixing.
ULTRA DURABLE PTFE COATING - Resists corrosion, abrasion, and high rotational forces to ensure long-lasting performance.

The Weewooday 4 Pieces PTFE Magnetic Stir Bars (35mm) combine robust magnetic steel cores with a corrosion-resistant PTFE coating, delivering smooth, stable stirring ideal for scientific research, industrial labs, and academic settings. This 4-pack offers versatile compatibility with most magnetic and heating stirrers, ensuring reliable, impurity-free mixing for a variety of substances.

Specifications

ASIN	B093T6STDD
Best Sellers Rank	#13,828 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #35 in Lab Stirrers
Brand Name	Weewooday
Color	white
Customer Reviews	4.7 4.7 out of 5 stars (1,723)
Item Dimensions L x W x Thickness	6.5"L x 3.54"W x 0.79"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	Magnetic Steel
Model Number	Weewooday-PTFE Magnetic Stirrer-01
Number of Items	36
Number of Pieces	36
Part Number	Weewooday-PTFE Magnetic Stirrer-01
Shape	Cylindrical
Unit Count	36 Count

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