Used for demonstration of Hydrogen (H₂) spectral lines and thus the Hydrogen tube can be used to demonstrate the Balmer spectral lines. In spectral tubes with non-noble gases there will always be recombination to molecules especially on the glass surface. In addition to the atomic line spectrum, a relatively weak band spectrum will also occur. In the demonstration of the Balmer lines, the line spectrum that borders the violet light (against UV light) will be of relatively weak appearance (due to the visible light spectrum interface).

The tube is to be used with the 285570 spectral tube holder, which also includes a controllable power supply (use 220 V AC).

The spectral tube has a voltage of between 3 and 6 kV - the operating voltage, however, is significantly lower. Spectral tube power supply supplies the tube with a constant current, thus regulating the operating voltage automatically.

The power level should be set as low as possible for sustaning the life of the tube, and the tube should therefore not run continuously. Therefore, when using high current levels, it should be considered to hold breaks in order to allow the tube to cool down.

Dimensions: Length for the whole tube is 224 mm - Capillary tube: 80 mm x Ø 6 mm.