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Controlled Atmosphere Stunning (CAS)

A more humane practice for chicken, fish and pigs

Are you a poultry or a pig/swine processor considering a move away from electrical water bath or mechanical stunning? Or a fishery looking for an alternative to the ice slurry?

Controlled Atmosphere Stunning (CAS) is an increasingly used process to humanely stun and then possibly slaughter animals destined for human consumption. Replacing traditional stunning methods with gas stunning results in improved animal welfare, as well as meat quality. Whether you need argon, nitrogen, oxygen, CO₂ or a mix of those gases, our experts look forward to assisting you.

Why Stun and Sometimes Slaughter with Gases?

  • Improved animal welfare and reduced stress
  • Improved meat quality
    • Poultry: less broken bones, bruising and bleeding
    • Hogs: reduction of the incidence of Pale Soft Exudative (PSE) Meats

Are you curious about CAS?

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Air Products gases, typically provided in gaseous and liquid form, enable customers in a wide range of industries to improve their environmental performance, product quality, and productivity.


Compressed argon gas and liquid argon in a variety of purities and in various modes of supply around the world thanks to our network of storage and transfill facilities.

Carbon Dioxide

Our experienced applications teams across the globe can use their industry and application knowledge to provide you with a compressed or liquid carbon dioxide supply and technology solution to meet your unique needs.


Useful as a gas, for its inert properties, and as a liquid for cooling and freezing. Virtually any industry can benefit from its unique properties to improve yields, optimize performance and make operations safer.




少量のガス供給のための従来のソリューション。 シリンダーは、10 ~ 50リットルのフル レンジのサイズ、圧力およびガス純度で、幅広いガスおよびガス混合物に対応できます。 従来のシリンダーまたはレギュレーター内蔵の革新的なIntegra® シリンダーからお選びください。

CryoEase® マイクロバルク ソリューション

大規模な運用向けの便利で費用対効果の高いソリューション。 CryoEase® タンクはさまざまなサイズで利用できます。 CryoEase® サービスは、ボンベの取り扱い、棚卸し、注文を行う必要がなくなるため、ガス供給を簡素化します。