Demonstrates that sound waves need material medium for propagation and cannot travel through vacuum. For use on pump plates with diameter at least 15cm. It consists of an electric Bell operating on 4-6 volts AC / DC, suspended inside bell jar through a pair of thick metal wires from a rubber bung that seals the jar from the top. The wires terminating in 4mm socket terminals on the upper side of rubber bung for electrical connection to the bell
Worldwide Institutional Supply & Export Solutions
Advanced Educational, Medical & Technical Laboratory Equipment Manufacturer
INTERLABS is a trusted Indian manufacturer and exporter of educational laboratory equipment, engineering training systems, healthcare teaching products, TVET solutions, medical instruments, communication trainers, clean air systems, and institutional procurement equipment for global educational and healthcare markets.
Educational & Technical Training Systems
Comprehensive STEM learning systems, engineering trainers, electronics communication trainers, embedded control modules, and vocational training equipment designed for schools, universities, polytechnic institutes, and technical education projects.
Healthcare & Medical Equipment Solutions
Professional medical laboratory products, anaesthesia instruments, healthcare teaching systems, institutional medical training products, and procurement support solutions for hospitals, healthcare institutions, NGOs, and government healthcare programs.
Industrial & Clean Air Laboratory Solutions
Clean air equipment, laboratory airflow systems, institutional research products, engineering laboratory systems, and technical infrastructure solutions for industrial, educational, and healthcare laboratory environments.
Global Institutional Procurement & Export Support
We support educational institutions, technical universities, engineering colleges, healthcare projects, vocational training centers, NGOs, ministries, government procurement agencies, and industrial training organizations across Africa, the Middle East, Southeast Asia, and international export markets.
Our export-ready manufacturing infrastructure supports bulk institutional procurement requirements with professional export packaging, OEM manufacturing capability, logistics coordination, and worldwide shipping support for educational and healthcare infrastructure projects.
