It is estimated that 30 percent of the energy efficient windows sold in England and Germany are filled with krypton. In a sealed glass insulating window, there are about 1.8 liters of krypton per square foot of window surface. The use of krypton in thermally efficient windows (as a replacement for either air or argon) helps provide the increase in "R" value required to meet new energy efficiency goals. Depending upon the application, argon is sometimes mixed with the krypton, and there are special systems that also require about 10 percent oxygen be added to the krypton.

Lasers use krypton to provide a desired optic wavelength depending upon the application for the laser. Krypton is always mixed with a halogen, typically fluorine, to produce the desired characteristics. Lasers of this nature are called "excimer" lasers.

Some companies involved with the space exploration industry are experimenting with krypton as a fuel source for ion propulsion engines, although xenon provides greater performance. Selection of propulsion fuel for electric engines is often a tradeoff of cost versus efficiency, since the price of xenon is typically 10 times that of krypton.

Krypton is sometimes used within halogen sealed beam headlights, which produce up to double the light output of standard incandescent headlamps.

For detailed information on Krypton, please see our specification data sheet.

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