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 Pieces PTFE Magnetic Stir Bar Lab Stirrer,30 Mm/ 1.18 Inch | Stainless Steel Laboratory Ptfe Stirrer Plate Bar, Pill-shaped Mixing Plate Magnetic Stick, Laboratory Use, White Color

Product ID: 239786512

Details

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

🧪PTFE resists corrosion & abrasion

🧲Strong magnetic force for stable stirring

⚙️Precision cylindrical shape for smooth rotation

€ 28.79

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧪 Stir Smarter, Not Harder: Elevate Your Lab Game with Weewooday!

TRUSTED BY EXPERTS - Top-rated (#1 in Stirrer Accessories) with 4.7 stars from nearly 1,700 users—join the elite lab pros.
BULK PACK ADVANTAGE - 8 high-quality stir bars included—always have a reliable backup for uninterrupted experiments.
FLAWLESS PERFORMANCE - Smooth, burr-free surface ensures consistent, deviation-free stirring every time.
UNMATCHED DURABILITY - Crafted from premium PTFE and magnetic steel to withstand harsh lab conditions without wear.
VERSATILE COMPATIBILITY - Seamlessly pairs with all magnetic and heating stirrers across scientific and industrial labs.

The Weewooday 8 Pieces PTFE Magnetic Mixer Stirrer Bars are precision-engineered cylindrical magnets coated in corrosion-resistant PTFE, designed for smooth, stable stirring in scientific, industrial, and academic labs. Each 30mm bar offers abrasion resistance and flawless rotation, compatible with all magnetic and heating stirrers. Highly rated and trusted by thousands, this bulk pack ensures you never run out of reliable mixing power.

Specifications

ASIN	B08L3KXRCB
Best Sellers Rank	#4,612 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Stirrer Accessories #570 in Test, Measure & Inspect
Brand Name	Weewooday
Color	white
Customer Reviews	4.7 4.7 out of 5 stars (1,696)
Item Dimensions L x W x Thickness	0.31"L x 0.31"W x 1.18"Th
Item Thickness	30 millimeters
Manufacturer	Weewooday
Material Type	Polytetrafluoroethylene
Model Number	Weewooday-PTFE Magnetic Stirrer-01
Number of Pieces	8
Part Number	Weewooday-PTFE Magnetic Stirrer-01
Shape	Cylindrical
Unit Count	8 Count

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