Gas Balance Sphere
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Product Code : SCL-MC-10521
Lab Glassware Manufacturer supplies the Gas Balance Sphere, a glass physics accessory used to demonstrate gas density and mass under filled and evacuated conditions.
Quick answer: The Gas Balance Sphere is a known-volume glass sphere with a stopcock, weighed before and after evacuation or gas filling on a compatible balance to demonstrate that gases have measurable mass — supplied as an accessory component, not a complete apparatus.
| Specification | Detail |
|---|---|
| Function | Gas density / mass comparison demonstration |
| Fitting | Stopcock/valve for filling and evacuation |
| Used with | Compatible balance, vacuum pump, tubing (sold separately unless bundled) |
| Capacity, glass type, pressure rating | Confirm exact SKU specification before ordering |
| Manufacturer | Lab Glassware Manufacturer, Ambala, Haryana, India |
How the Gas Balance Sphere Demonstrates Gas Mass
The experiment principle is straightforward but effective for teaching: a sealed glass sphere of known volume is weighed on a precision balance while filled with air (or a chosen gas) at normal pressure, then connected to a vacuum pump through its stopcock and evacuated, then weighed again once sealed. The measurable difference between the two readings demonstrates that the gas inside had physical mass — a concept many students find abstract until they see it as a number on a balance. Because the sphere itself is only one part of a working setup, laboratories ordering this item should also confirm they have (or are separately sourcing) a suitably precise balance, a compatible vacuum pump, and connecting tubing rated for the pressures involved, along with a written experiment guide for consistent classroom use.
Frequently Asked Questions
What is the Gas Balance Sphere used for?
It is used to demonstrate that gases have measurable mass, by comparing the sphere's weight before and after evacuation or gas filling.
Is this a complete apparatus or an accessory?
It is supplied as an accessory/experiment component.
Related Products
See also: Graduated Cylinder, Measuring Cylinders and Laboratory Cylinders.
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Last updated: September 2026
