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 screw cap secure seal

🧊3.3 borosilicate thick glass

🧪50ml precise capacity

S$59

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Description

🔬 Elevate your lab game with precision-packed, leak-proof media storage!

COMPACT EFFICIENT - At just 3.5" x 1.6", these bottles fit seamlessly into any lab setup or storage rack, maximizing space.
SECURE LEAK PROOF - GL32 blue polypropylene screw caps provide a reliable, contamination-resistant seal for your valuable media.
VALUE PACKED MULTIPACK - Case of 6 bottles offers cost-effective, reusable storage solutions for professionals who demand quality and quantity.
OPTIMIZED VOLUME CONTROL - Graduations from 20ml to 40ml allow precise measurement and easy monitoring of small volume storage.
PRECISION MEETS DURABILITY - Thickened 3.3 borosilicate glass ensures resilience through repeated autoclave cycles without compromise.

Karter Scientific’s 50ml round media storage bottles combine thick 3.3 borosilicate glass with GL32 screw caps to deliver durable, leak-proof containment. Designed for repeated autoclave sterilization and precise volume measurement, this case of 6 offers a compact, professional-grade solution for small volume media, reagents, and sterile water storage.

Specifications

ASIN	B09DGN2X8G
Additional Features	Leak Proof
Age Range Description	Adult
Best Sellers Rank	#30,473 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 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 (842)
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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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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S$59

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.

Secure transaction

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Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews