Nitrogen is used primarily for blanketing volatile chemicals in the industrial market.
Liquid Nitrogen, a cryogenic liquid, is used primarily as a refrigerant. It is used in medical research, and can be used to keep the essence of a cell alive while it is being studied. (At the Centers for Disease Control and Prevention in Atlanta, for example, liquid Nitrogen is being used in the study of the AIDS virus.)
For large volumes where you can install pipe from the tank to the use point. They may look like simple farm silos, but there is a lot of technology at play to keep this product stored at cryogenic temperature.
Cylinders are the most common form of delivery for gases. For small quantities or for areas where it is not practical to run piping, cylinders are the mode of choice.
As volumes grow, Liquid cylinders offer the ability to store larger quantities of gas in a smaller footprint.
A great option for the large volume client who is not ready to install a large bulk tank system. This removes the high cost of handling high pressure cylinders.
I like that I rarely get calls anymore with complaints about our gas supplier.