Can i use at 15 psi in pressure cooker?

Absolutely be sure lids are closed tight. I made the mistake of having them a bit cracked and my liquid boiled out. Also fill water in pressure cooker as high as the water is in the bottle.

Can these be used on a magnetic stirrer with a hot plate?

Some of the bottoms of mine are insanely uneven, but i have used them on a hot plate with stirrer and i have also used them in a pressure cooker and they have had no real problems so far.

How do you exlain one of mine cracking from thermal shock when I added room temp water after being microwaved for thirty seconds?

Very poor tempering, poor quality glass. I doubt these bottles are really borosilicate. I’ve had the same thermal cracking issues. From now on, I’m buying real Corning or Kimax.

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Karter Scientific 50ml Glass Round Media Storage Bottles with GL32 Screw Cap, Borosilicate, (Case of 6)

Karter Scientific 50ml Glass Round Media Storage Bottles with GL32 Screw Cap, Borosilicate, (Case of 6)

Product ID: 501509727

Details

Bottle Type
Media Storage
Brand
Karter
Capacity
50 ml
Color
Pack of 6
Material
Borosilicate

🔵GL32 leak-proof screw cap

🧊3.3 borosilicate glass durability

🧪50ml precision capacity

S$58

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Description

🧪 Elevate your lab game with precision and style!

SECURE SPILL FREE - GL32 blue polypropylene screw cap ensures leak-proof storage on the go
COMPACT CONVENIENT - Slim 3.5" x 1.6" design fits effortlessly into any lab or workspace
UNMATCHED DURABILITY - Thickened 3.3 borosilicate glass resists thermal shock and chemical wear
ECO FRIENDLY REUSABILITY - Reusable glass bottles designed for sustainable, long-term use
PRECISION MEETS PRACTICALITY - Accurate 20ml graduations for flawless measurement every time

The Karter Scientific 50ml Glass Round Media Storage Bottles come in a pack of six, featuring thickened 3.3 borosilicate glass for superior durability and thermal resistance. Each bottle includes a GL32 blue polypropylene screw cap that guarantees leak-proof storage, with clear 20ml graduations for precise measurement. Compact and reusable, these bottles are designed for professional lab environments seeking reliable, sustainable media storage solutions.

Specifications

ASIN	B09DGN2X8G
Additional Features	Leak Proof
Age Range Description	Adult
Best Sellers Rank	#16,146 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Lab Media Bottles
Bottle Type	Media Storage Bottle
Brand Name	Karter Scientific
Capacity	50 ml
Color	Pack of 6
Container Type	Bottle, Round
Customer Reviews	4.3 4.3 out of 5 stars (838)
Finish Types	Glass
Item Dimensions W x H	1.6"W x 3.5"H
Item Weight	0.73 kg
Manufacturer	Karter Scientific
Manufacturer Part Number	219L5
Material Type	Borosilicate Glass
Number of Items	6
Product Care Instructions	Machine Wash
Recommended Uses For Product	Storage
Reusability	Reusable
Shape	Round
Specific Uses For Product	Storage
Style Name	PACK OF 6
Theme	Science
Unit Count	6 Count

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S$58

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered 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 SINGAPORE.

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TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

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