The initial color source is the inert gas that emits a characteristic color when electricity is applied. The two most common gases are neon
, which emits a fiery red, and a mixture of argon
and minute particles of mercury, which emits a subdued blue. Clear glass allows you to see the characteristic colors emitted by the gas.
Fluorescent powders may be coated or baked to the inside walls of the glass tubing and the source light is then transformed into a multitude of shades such as pink, turquoise, and green. By altering the mixture of phosphors, subtle differences are possible. For example, white is available in a wide array of color temperatures (measured in degrees kelvin
) from warm (2300K) to cool (8600K).
Tubing is also produced in colored glass. Deep translucent reds, blues, yellows, and greens, for example, produce richly saturated colors referred to as exotic or Euro
glass. Colored glass may also have a fluorescent coating which can change both the quality and color of the light.
Head over to our Krypton Neon Color Chart
page to see the many colors available.