J321 Geiger–Müller Tube for DIY Geiger Counter Kit

The J321 Geiger–Müller (GM) Tube is a gas-filled radiation detector designed for use in DIY Geiger counter kits and nuclear radiation detection projects. It is capable of detecting beta (β) radiation and gamma (γ) radiation, making it suitable for educational experiments, environmental radiation monitoring, and research applications. The tube features a recommended operating voltage of 380V, a long service life of over 1 × 10⁹ detection pulses, and a transparent glass construction for easy integration into custom Geiger counter circuits.

Key Features -

• Geiger–Müller tube for DIY radiation detector projects

• Detects beta (β) and gamma (γ) radiation

• Recommended operating voltage of 380V

• Low starting voltage below 350V

• Long operational life exceeding 1 × 10⁹ pulses

• Transparent glass tube construction

• Suitable for educational, research, and hobby electronics

• Compatible with many DIY Geiger counter modules

Specifications -

• Product Type - Geiger–Müller (GM) Tube

• Model - J321

• Radiation Detection - Beta (β), Gamma (γ)

• Starting Voltage - Less than 350V

• Recommended Operating Voltage - 380V

• Minimum Plateau Length - 80V

• Maximum Plateau Slope - 10% / 80V

• Maximum Operating Voltage - 600V

• Maximum Background Count Rate - 25 Counts/Minute

• Service Life - Greater than 1 × 10⁹ Pulses

• Tube Material - Glass

• Tube Color - Transparent

Applications -

• DIY Geiger counter kits

• Radiation detection projects

• Educational laboratory experiments

• Environmental radiation monitoring

• Electronics learning projects

• Nuclear science demonstrations

• Research and prototype development

• Radiation instrument repair and replacement