Helium (He) is a colorless, odorless, and tasteless gas that is lighter than air. It is the second most abundant element in the universe, after hydrogen. Helium is a non-toxic and inert gas, meaning that it does not react readily with other elements or compounds. These properties make it a useful gas for a variety of industrial and commercial applications.

Helium gas is used in a wide range of applications, including:

• Medical: Helium gas is used in medical imaging devices such as MRI machines. It is also used in respiratory therapy to help patients breathe more easily.
• Industrial: Helium gas is used in a variety of industrial applications, such as welding, cutting, and cryogenics. It is also used in leak detection and gas analysis.
• Scientific: Helium gas is used in a variety of scientific applications, such as spectroscopy and chromatography. It is also used in particle accelerators and other high-energy physics experiments.
• Consumer: Helium gas is used in balloons and other party supplies. It is also used in airship and blimp inflation.

Helium gas is used in a wide range of industries, including:

• Medical: Hospitals, clinics, research laboratories
• Industrial: Welding shops, metal fabrication shops, cryogenics companies, gas analysis laboratories
• Scientific: Universities, research laboratories, government agencies
• Consumer: Party supply stores, balloon vendors, airship and blimp companies

Helium gas is available in a variety of purity grades, depending on the application. The most common purity grades are:

• Commercial grade: 99.5% purity
• Research grade: 99.995% purity
• Ultra high purity (UHP): 99.9999% purity

UHP helium is required for some applications, such as medical imaging and semiconductor manufacturing.

Helium gas is typically supplied in cylinders, bulk tanks, and liquid tankers. The most appropriate supply option depends on the volume of helium required and the application.

• Cylinders: Cylinders are the most common way to supply helium for small-volume applications. They are available in a variety of sizes and purity grades.
• Bulk tanks: Bulk tanks are a good option for medium- to large-volume applications. They can be installed on-site and refilled by a gas supplier.
• Liquid tankers: Liquid tankers are used to supply helium for very large-volume applications, such as MRI machines and airship inflation.