Nitrogen Gas

FAQs

• Where can I buy nitrogen gas?

  Customers with an account can purchase direct delivery from Coregas, or through our national depot network. Click here for our store locator.

  Coregas account customers can choose their preferred method to place an order. Coregas offers online ordering via our website or app, our Australian call centre as well as through fax or email.
  

• How is nitrogen gas stored?

  In common with other compressed gases, the cylinders in which it is stored may explode if exposed to very high temperatures that cause the gas pressure to rise beyond the level of which the cylinders are designed to handle. Accordingly, gaseous nitrogen cylinder tanks should be stored upright, in a well-ventilated storage area that is dry and cool.
  

• How much is nitrogen gas?

  It depends on how much you order and the grade of nitrogen that you need. If you would like detailed pricing information for any grade of nitrogen gas that we manufacture and sell, please call and speak to us during business hours.
  

• How long does a cylinder tank of nitrogen last?

  How long a tank of nitrogen gas lasts will depend on its size and pressure, as well as the usage rate of the equipment you need it for. If you have the usage rate figures to hand, we can calculate how long each tank size will last you.
  

• Is nitrogen gas dangerous?

  Nitrogen is an inert gas and is non toxic. However, in the event of a leak, it could displace oxygen in the surrounding air to a level that could cause asphyxiation. Breathing in pure nitrogen is very dangerous and can render a person unconscious in just a couple of breaths. It’s also important to remember that cylinders of nitrogen are stored at high pressure, which means they can also present an explosion hazard.

• What is the temperature of nitrogen gas?

  In its gaseous form, nitrogen will be cold to the touch. It can potentially cause cold burns and injuries as a result of the surrounding air pressure. Liquid nitrogen (LIN) will be -196˚C or lower (but above -210˚C, at which temperature nitrogen freezes).
  

• Does nitrogen gas burn?

  As an inert gas, nitrogen is not combustible and will not burn under any ordinary circumstances.
  

• What are the common nitrogen gas products offered for industrial and commercial use?

  Coregas provides a tiered selection of nitrogen gas products to match specific technical requirements. This includes Nitrogen 3.0 for basic industrial processes, Nitrogen 4.0 for high-precision welding or cutting and Nitrogen 5.0 for sensitive laboratory analysis. We also offer application-specific gases such as food-grade nitrogen and pharma-grade nitrogen for regulated manufacturing.

• How is nitrogen gas used in food packaging and preservation applications?

  In the food industry, nitrogen is primarily used to maintain product integrity through Modified Atmosphere Packaging (MAP). Unlike oxygen, which promotes spoilage and oxidation, nitrogen is relatively inert under typical conditions and used to displace the atmospheric air inside packaging.

  This process helps preserve the freshness, texture and nutritional quality of the food without the need for chemical preservatives. It is also used in controlled-atmosphere storage for bulk fruit and vegetables to slow down the ripening process and in wine production to sparge dissolved oxygen, preventing the liquid from oxidising and potentially spoiling into vinegar.

  
  

• What safety measures should be followed when using nitrogen gas?

  Nitrogen isn’t toxic, but it can be dangerous because it crowds out the oxygen you need to breathe. Because it is colourless and odourless, leaks are difficult to detect without specialised equipment. It is critical to ensure adequate ventilation in enclosed spaces where nitrogen is handled. We recommend installing oxygen depletion monitors in areas of potential accumulation to alert personnel if levels drop. Additionally, high-pressure cylinders must be secured upright to prevent falling and should only be operated with compatible pressure regulators.

• How do I select the right nitrogen gas supply option for my specific application?

  The ideal supply option depends on your consumption volume and required flow rate. For low-volume or mobile applications, single high-pressure cylinders are the most practical. If your demand is consistent but moderate, a 12-cylinder manifold pack offers a larger buffer.

  For high-demand applications like continuous laser cutting or large-scale food processing, a cryogenic liquid nitrogen (LIN) tank is often the most cost-effective solution. As a leading provider of industrial and specialty gases, we can help you calculate your usage to determine the most efficient delivery method.

  
  

• What are the benefits of using nitrogen gas in laboratory and manufacturing processes?

  Nitrogen is valued in these sectors because it creates and maintains a stable, non-reactive environment. In manufacturing, it is used for "blanketing" to protect volatile chemicals from reacting with oxygen, which reduces fire risks. In laboratory settings, high-purity nitrogen is used as a carrier gas in chromatography to transport samples without reacting with them or as a nebuliser gas in mass spectrometry.