Duran Glass Vacuum Bell
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Product Code : SCL-PLE-10387
The DURAN Glass Vacuum Bell from Lab Glassware Manufacturer is a laboratory bell jar used to enclose apparatus during vacuum, pressure, gas-expansion, boiling-point, and sound-transmission demonstrations.
Quick answer: A vacuum bell jar is a glass dome placed over apparatus and connected to a vacuum pump to demonstrate effects such as sound not travelling in a vacuum, balloon expansion at low pressure, or boiling point reduction.
| Specification | Detail |
|---|---|
| Product Name | DURAN Glass Vacuum Bell |
| Glass Type | DURAN-type borosilicate glass |
| Brand / Supplier | Lab Glassware Manufacturer |
| Category | Laboratory Glassware / Vacuum Apparatus / Physics Lab Equipment |
What Is a Vacuum Bell Jar Used For?
A vacuum bell jar is sealed onto a baseplate connected to a vacuum pump, allowing students to observe how removing air affects sound transmission, balloon or marshmallow expansion, and the boiling point of water — a staple demonstration in physics and general science teaching labs.
Frequently Asked Questions
Q: What experiments use a vacuum bell jar?
A: Common demonstrations include showing sound cannot travel in a vacuum, balloon/marshmallow expansion at low pressure, and reduced boiling point of water under vacuum.
Q: Does it come with a vacuum pump?
A: This listing is for the glass bell jar; confirm with our team whether a baseplate and vacuum pump are needed separately for your setup.
Q: Is the glass heat and pressure resistant?
A: DURAN-type borosilicate glass is generally valued for thermal and mechanical durability; confirm exact glass grade and pressure rating with our team before ordering.
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Last updated: September 2026
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