1. Use inert gas as protective gas in metal welding and cutting to avoid oxidation. Argon's chemical inertness is also used to melt special metals.

2. Argon blowing and argon protection is an important way to improve the quality of steel. Due to its high density and low thermal conductivity, argon is used in the lighting industry and to fill various discharge devices, as well as lasers and surgical hemostatic airbrushes, as it can be charged into a light source to recalibrate its service life and increase its brightness.

3. Argon can be used as carrier gas for large chromatographs.

4. Krypton gas can be filled with advanced electron tubes and continuous ultraviolet lamps for laboratory use. Krypton can also be processed into atomic lamps that do not require electricity. Compared with an argon lamp of the same power, the argon lamp uses 20 to 25 percent less power and can last two to three times longer. They are called longevity lamps.

5. Krypton lamps have exceptionally high transmittance and are therefore used to illuminate the lights on cross-country vehicles during night combat and to illuminate landing spots on airstrips. Other materials, such as ultra-high pressure mercury lamps, zirconium point sources for special lighting, strobe lamps and strobe detectors, use krypton.

6. Krypton can also be used to fill ionization chambers to measure high radiation levels (cosmic radiation) and can be used as a light screen material for X-ray work.