NexGen Spectrum Tube, Neon

Reveal the science behind every neon sign's orange glow

The NexGen Spectrum Tube, Neon contains neon gas and runs on the NexGen Spectrum Tube Power Supply. It produces a bright orange-red glow, the same color that defines neon signage worldwide. Through a spectroscope, that orange glow resolves into an unusually dense collection of lines concentrated in the 580–700 nm range of the visible spectrum.

Neon has more emission lines in the visible range than any other noble gas, with dozens of lines packed into the orange-red region. That density makes it one of the most recognizable spectra in the classroom and a clear contrast to the few, widely spaced lines of helium or the four-line simplicity of hydrogen. Neon also serves as a practical calibration source: its lines are well-documented, so measuring neon line positions and comparing them to published values gives students an immediate check on their spectrometer's accuracy.

Why Teachers Love It

• A Built-In Calibration Source for Spectrometer Labs – Neon's many lines at published wavelengths make it a standard calibration reference in spectroscopy. Students measure neon line positions, compare them to known values, and use that comparison to verify their spectrometer before moving to other elements.

• Built for Long-Term Classroom Use – No internal electrodes means the tube resists the wear that shortens conventional spectrum tube life. A hard polymer shell protects the glass from everyday bumps and drops.

• Continuous Use with the NexGen Power Supply – No timing restrictions. Students take their time reading the dense orange-red spectrum without a countdown.