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CO₂ helping to 
protect your grains


Find your gas supply


 

Liquid CO₂

Liquid CO₂ for reliable continuous supply, available in cylinders, racks, or tanks.


There are different sizes of bottles and containers, but the connectors are standardized.

Each supplier generally has its own network of depots.Prices and commercial conditions vary from sector to sector.

Gas use for agricultural storage may be regulated. Check local regulations before use.

Containers are rented on a consignment basis and must be returned at the end of their useful life.

Rental charges are billed monthly and are proportional to the length of time the containers are out of service.

Gas remaining in non-empty returned containers is non-refundable.

Request written proof of return from the carrier or custodian.

CO2 gas cylinders with valves for modified atmosphere storage and CO2 injection

Solid CO₂ (dry ice)

Dry ice is the solid form of CO₂. It contains no water and leaves no residue when it melts.


Anticipate your need for dry ice and receive it just in time for packaging.

Delivered in insulated boxes (dry ice temperature = -78.5°C).

Gas use for agricultural storage may be regulated. Check local regulations before use.

Avoid direct contact with the grain.

Always wear protective gloves & goggles, and use a shovel for handling (risk of cold burns).

Mass loss due to evaporation is around 2 kg / 24h / 10 kg.

To limit this phenomenon, keep dry ice cool in its original packaging, and do not open before use.

Dry ice CO₂ pellets spilled beside insulated container for controlled atmosphere cooling
CO2 gas cylinder manifold for modified atmosphere storage and controlled CO2 injection

Environmental impact


CO₂ capture is the International Energy Agency's third priority for reducing the concentration of greenhouse gases in the atmosphere.

It involves capturing CO₂ emissions generated by industry, for use in other applications.

Instead of being directly released into the atmosphere by industrials, CO₂ is recovered, packaged and marketed by gas suppliers, giving it a new purpose.

Frequently asked questions

Quick answers to your most common questions.

Browse all questions 

CO₂ is generally more effective than nitrogen because it actively disrupts insect respiration, while nitrogen only works by displacing oxygen. CO₂ is also easier to retain inside hermetic structures and to monitor in field conditions.
As a rough guide, plan for around 1 kg of CO₂ per tonne of grain to reach an effective modified atmosphere (> 40% CO₂) inside a properly prepared hermetic container. The exact figure depends on the void volume to inert, the tightness of the container and the product being stored.

On top of this initial dose, a maintenance top-up may be required to compensate for grain respiration and micro-leaks throughout the treatment period.
The use of CO₂ is essential for the Nox® process to work properly. CO₂ is an abundant gas, which can be supplied in two main forms: in liquid form (in cylinders) or in solid form (dry ice).

The exact amount of CO₂ to add depends on the type of product to be stored and the hermetic enclosure used. To simplify this estimation, we provide an online filling calculator (accessible from the user support page) which guarantees optimal dosing in just a few clicks.

Supply conditions and the regulations applicable to CO₂ may vary from one country to another. Find out about local specificities before any implementation.
There is no universal safety protocol. Each country can issue its own safety recommendations and constraints. 

However, in order of importance, the most important security precautions to take are :
  • choosing a dedicated, adequately ventilated operating area
  • operators awareness
  • clear preventive signage
  • mobile CO₂ detection on operators
  • fixed CO₂ detection in the operating zone (at low points)
  • ventilation of the operating area air renewal.

We can support you in implementing all these points.

No, using the Nox system does not require any special training or authorization for operators.
The same applies to handling pressurized gas cylinders and injecting CO₂ or nitrogen).
However, safety instructions and provisions relating to the use of these gases must be put in place.

Recommendations or framework for regulatory use vary from country to country.

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