Dry air: a mixture of 21% oxygen and 79% nitrogen
Carbon dioxide mixed gas: 2.5% carbon dioxide + 27.5% nitrogen + 70% helium
Excimer laser mixed gas: 0.103% fluorine + argon + neon + helium mixed gas
Welding mixed gas: 70% helium + 30% argon mixed gas
High-efficiency energy-saving bulb filled with mixed gas: 50% krypton +50% argon mixed gas
Gas mixture for labor analgesia: 50% nitrous oxide + 50% oxygen gas mixture
Mixed gas for blood analysis: 5% carbon dioxide + 20% oxygen + 75% nitrogen mixed gas