Bell Jar
Product Code : JA-ELA-5247
The Bell Jar (SKU JA-ELA-5247) is a bell-shaped glass vessel used to contain a vacuum in the laboratory. It has a ground glass stopper at the top, a ground rim that seals against a vacuum plate, and a heavy, flattened base that keeps it steady. JaincoLab makes it in two sizes, 200 mm high by 100 mm diameter and 225 mm high by 150 mm diameter, for physics demonstrations on air pressure and on sound in a vacuum.
Specifications
The bell jar is made of glass with a ground glass stopper at the top and a ground rim, and is listed in two sizes: 200 mm height with 100 mm diameter, and 225 mm height with 150 mm diameter, as shown in the table below.
| Product | Bell Jar |
| SKU | JA-ELA-5247 |
| Material | Glass |
| Top | Ground glass stopper |
| Rim | Ground |
| Base | Heavy and flattened |
| Sizes (height x diameter) | 200 x 100 mm; 225 x 150 mm |
Applications of the glass bell jar with stopper
The glass bell jar with stopper is used to hold a partial vacuum over a vacuum plate, so students can see how removing air affects sound or a balloon, and to keep items under a controlled atmosphere on the bench.
- Bell-in-a-vacuum demonstration of sound transmission
- Air pressure experiments with a hand or vacuum pump
- Balloon expansion under reduced pressure
- Enclosing specimens or apparatus under a controlled atmosphere
Scope of supply and ordering
The listing covers one glass bell jar with ground stopper in the size ordered. The vacuum plate and pump are separate items. Accessories, spares and quantities are confirmed on the quotation.
Minimum order quantity, lead time and packing are confirmed on each quotation for the sizes and number of jars and the delivery destination. Glassware is packed for school, college and tender orders.
Frequently asked questions
Which sizes are available?
200 mm height x 100 mm diameter and 225 mm height x 150 mm diameter.
Does it have a stopper?
Yes. A ground glass stopper fits the opening at the top.
What is it used with?
A vacuum plate and a vacuum or hand pump for air pressure and sound experiments.
Related products
This bell jar is listed in the JaincoLab educational laboratory apparatus range.
Request a quote
To order the Bell Jar, send the size and number of jars and delivery destination through the JaincoLab contact page or email [email protected], quoting SKU JA-ELA-5247. Institutions and contractors buying under a tender can also reach us via the tenders page.
