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 250ml Glass Round Media Storage Bottles with GL45 Screw Cap, Borosilicate Glass, 251L5 (Case of 6)

Product ID: 184966949

Details

Bottle Type
Media Storage
Brand
Karter
Capacity
250 ml
Color
Blue
Material
Borosilicate

🔒Leak-proof GL45 screw cap

🧪250ml precision capacity

🧱Durable borosilicate glass

¥15233

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧬 Elevate your lab game with precision and style!

BATCH READY - Pack of 6 bottles means you’re always prepped for multiple experiments or media storage needs.
BUILT TO LAST - Thickened borosilicate glass resists thermal shock and chemical corrosion for reliable reuse.
SECURE SPILL FREE - GL45 polypropylene screw cap ensures airtight, leak-proof storage—no mess, no stress.
COMPACT CONVENIENT - Sleek 5.5" x 2.75" design fits effortlessly on lab shelves or workstations, maximizing space.
PRECISION MEETS PRACTICALITY - Graduated markings every 25ml for exact measurements, empowering flawless media prep.

The Karter Scientific 250ml Glass Round Media Storage Bottles come in a pack of six, crafted from durable borosilicate glass with clear 25ml graduations. Featuring leak-proof GL45 screw caps, these bottles offer secure, reusable storage ideal for scientific media preparation and storage, combining precision, durability, and convenience in one sleek package.

Specifications

ASIN	B07WTRQNSD
Additional Features	Leak Proof
Age Range Description	Adult
Best Sellers Rank	#19,046 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Lab Media Bottles
Bottle Type	Media Storage Bottle
Brand Name	Karter Scientific
Capacity	250 ml
Color	Blue
Container Type	Bottle
Customer Reviews	4.3 4.3 out of 5 stars (849)
Finish Types	Glass
Item Dimensions W x H	2.75"W x 5.5"H
Item Weight	1.7 kg
Manufacturer	Karter Scientific
Manufacturer Part Number	251L5
Material Type	Borosilicate Glass
Model Number	251L5
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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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

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

2 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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