Nitrogen Gas Applications

Food & Beverage

Nitrogen gas applications

Food Applications

Nitrogen is key to extending the shelf life of packaged foods. It effectively displaces oxygen and moisture which can cause mould, mildew, and other quality issues. During food manufacturing and processing, nitrogen can be used to flush tubes, pipes, and containers before moving the product through the system. Most commonly, nitrogen is used for ‘flushing’, a process that involves placing the food into its container and filling it with nitrogen. This displaces the oxygen, forcing it out of the bag, which is then sealed tightly to prevent the nitrogen from escaping. In addition to increasing the shelf-life of the food, nitrogen also adds a layer of cushioning, which is particularly important for fragile foods such as chips, pretzels, and popcorn. Nitrogen is also useful for vacuum-packing foods as it removes the air inside the package before sealing it.

nitrogen gas applications

Beverage Applications

Nitrogen is also used in bottling. It removes oxygen from the bottle, making it suitable to be stored for longer periods of time. Removing the oxygen also flushes out potential contaminants and minimises oxidation that may cause food spoilage. Bottling with nitrogen also helps to preserve flavours, stop rancidity, and keep its contents fresher for longer. Here at On Site Gas, we work with bottling customers worldwide in developing and expanding the nitrogen generator of choice that best serves each of their unique needs, from the smallest estate to the largest high-volume producer. All of our systems are easily incorporated into yours and provide quick returns on your investment and stable operating costs for your gas supply.

Our Process

We are specialist suppliers of on-site nitrogen and oxygen generators. We offer leasing and rental options so please get in touch to see how we can tailor a system to suit your requirements.

Project consultation

An initial step to determine how we can be of assistance to your project.

Design & Build

On Site Gas Systems are designed and built right here in Australia.

Installation & Commissioning

We offer full installation services as well as required training.


Find your answers and more over on our full Frequently Asked Questions page.

Nitrogen is used to extend the shelf life of food and beverages.

Our PSA (pressure swing adsorption) nitrogen generators are the most common technology used for this application,

Generator costs vary. We work with you to properly size the system to meet your purity, flow rate, and pressure requirements. Once this is done, we can make a formal price quote, and calculate your payback time, which is typically less than 24 months. Please get in contact with us and we can provide you with a personalised quote.