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 Mixer Stirrer Bar, White Color Stainless Steel Laboratory PTFE Stir Plate Bar, Mixing Plate Magnet Stick (30 Mm/ 1.18 Inch)

Weewooday 8 Pieces PTFE Magnetic Mixer Stirrer Bar, White Color Stainless Steel Laboratory PTFE Stir Plate Bar, Mixing Plate Magnet Stick (30 Mm/ 1.18 Inch)

Product ID: 239786512

Details

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

🧲30mm precision magnetic core

⚙️Smooth rotation, no speed deviation

🛡️PTFE resists corrosion & abrasion

€ 21.47

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Description

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

TOP RATED TRUSTED - Ranked #1 in Stirrer Accessories with a stellar 4.7-star rating from 1,690+ users—join the community of lab pros who rely on Weewooday.
UNMATCHED DURABILITY - Engineered with premium PTFE and magnetic steel for corrosion and abrasion resistance—built to last through intense lab sessions.
VERSATILE LAB ESSENTIAL - Compatible with a wide range of magnetic and heating stirrers—perfect for research, industrial, and academic labs alike.
PRECISION MIXING EVERY TIME - Cylindrical, burr-free design ensures ultra-smooth rotation and stable stirring speeds—no more inconsistent results.
BULK PACK FOR CONTINUOUS WORKFLOW - 8 pieces of 30mm stir bars included, so you’re always ready to mix multiple samples without downtime.

The Weewooday 8 Pieces PTFE Magnetic Mixer Stirrer Bars are precision-engineered 30mm cylindrical bars made from corrosion-resistant PTFE and quality magnetic steel. Designed for smooth, stable rotation without speed deviation, these stir bars are ideal for scientific research, industrial, and academic labs. Compatible with most magnetic and heating stirrers, this bulk pack ensures continuous, reliable mixing performance trusted by thousands of professionals.

Specifications

ASIN	B08L3KXRCB
Best Sellers Rank	#5,505 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Stirrer Accessories #720 in Test, Measure & Inspect
Brand Name	Weewooday
Color	white
Customer Reviews	4.7 4.7 out of 5 stars (1,690)
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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€ 21.47

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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