Supplied with a direct plate so that the complete experiment can be performed. The electric bell operates on 4–6 V AC/DC and is suspended on an elastic cord so the ringer can vibrate freely. Fine flexible wire connects to terminals mounted in the rubber bung that seals the jar.

We are manufacturers and suppliers of the Bell in Bell Jar (with plate and vacuum pump plate), serving Algeria, Argentina, Australia, Bahrain, Bangladesh, Belgium, Bhutan, Brazil, Cambodia, Cuba, Cyprus, Denmark, Ecuador, Egypt, Ethiopia, Finland, France, Georgia, Germany, Ghana, Hungary, Iceland, Italy, Japan, Jordan, Kenya, Kuwait, Malaysia, the Philippines, Tanzania and Uganda.