Rare gases such as krypton (Kr), xenon (Xe) and neon (Ne) are only present in air at concentrations below 20 ppm. Demand for these rare gases is rising, however, as they play a vital role in many different industries. As the world's largest manufacturer of rare gas mixtures for incandescent, fluorescent, and high intensity discharge (HID) lamps, Linde Engineering has developed innovative processes that boost the capture of rare gases from secondary streams in tonnage-size air separation plants.
KrXe:
Our multi-step enrichment process produces krypton and xenon gas mixtures with typical purities of over 99.9 percent. In a first enrichment step the concentration of krypton and xenon in liquid oxygen (LOX) is increased to levels below 1% using cryogenic rectification.

Rare gases such as krypton (Kr), xenon (Xe) and neon (Ne) are only present in air at concentrations below 20 ppm. Demand for these rare gases is rising, however, as they play a vital role in many different industries. As the world's largest manufacturer of rare gas mixtures for incandescent, fluorescent, and high intensity discharge (HID) lamps, Linde Engineering has developed innovative processes that boost the capture of rare gases from secondary streams in tonnage-size air separation plants.
KrXe:
Our multi-step enrichment process produces krypton and xenon gas mixtures with typical purities of over 99.9 percent. In a first enrichment step the concentration of krypton and xenon in liquid oxygen (LOX) is increased to levels below 1% using cryogenic rectification.