Industrial gases, applications, services and products for seafood

Protecting the value of your product

A growing global demand for fish and seafood products has heightened the need to increase productivity and minimize yield loss of this delicate protein. From growth to production, we can help you optimize your process and equipment to meet your goals. With our pre-chilling and quick freezing systems, you can lock in natural moisture and reduce bacterial growth to deliver high quality seafood to your customers.

Related Gases

Carbon Dioxide Carbon Dioxide rollover Carbon Dioxide

Carbon dioxide protects the taste and texture of your seafood products by maintaining proper temperature control in cooling, chilling and freezing applications.

Nitrogen Nitrogen rollover Nitrogen

Nitrogen is a key cryogenic agent in cooling, chilling and food freezing processes. And because of its extremely cold temperatures, liquid nitrogen is an essential part of immersion freezing, the fastest method known for producing individually quick frozen (IQF) foods.

Oxygen Oxygen rollover Oxygen

Critical for life, oxygen is used in aquaculture to deliver the dissolved oxygen levels that are needed for high production levels, increased pond population density and fish health.


Freezing and Chilling Shrimp

Removing heat quickly and uniformly is vital to maintaining the quality and integrity of your seafood. A rapid, thorough chill retains the moisture and natural attributes that make your product unique and delicious. Praxair ColdFront™ freezing systems provide accurate, repeatable and affordable chilling when and where you need it.

CO2 Snowing

Removing heat with carbon dioxide snow is an economical and precise way to cool your seafood products at any point in your production. Praxair snow dispensing devices are available in a wide range of sizes and types, and can stream CO2 snow from any orientation. Plus, the snow particles are more consistent and uniform, allowing for cost-effective snow cooling.

Modified Atmosphere Packaging

Replacing the air in a seafood package with a precise gas mixture allows the product to stay at its best for longer. Choosing the proper atmosphere means achieving the right combination of gases to reduce the growth of bacteria and prevent discoloration. Praxair's ExtendaPak™ line of gas mixtures helps ensure you get just the right atmosphere for your seafood product.


Maintaining oxygen levels in your aquaculture system is critical to the success of your operation. Delivering pure Praxair oxygen to pond water results in much greater transference rates, compared to air-only systems. With precise oxygen level monitoring and delivery, your system can maintain and shift oxygen levels, as needed, to help you increase yield and meet higher production goals.


  • At Praxair, we understand how cryogenic freezing systems affect your product, and how making changes to your current method could benefit your operations. We can analyze your process and provide you with recommendations to help you improve the quality and consistency of your food product.

  • We ensure that our customers get the right products, optimized for their operations. And we back them up with 24/7 support services that include total system review and start up, customized production and operator training.

At Praxair, we help you optimize every step of your process. From helping you install, monitor and manage your gas supply, to recommending applications to help you achieve the level of productivity and product quality you require.

View our services portfolio


ColdFront Ultra Performance Tunnel Freezer

ColdFront™ Ultra Performance Tunnel Freezer

Increase throughput of your seafood products and boost productivity in the same or smaller footprint than existing cryogenic operations.

<em>ColdFront</em> Ultra Performance Tunnel Freezer Brochure (606KB)

ColdFront Ultra Performance Spiral Freezer

ColdFront™ Ultra Performance Spiral Freezer

With improved distribution control and vapor circulation, the ultra performance spiral freezer adds additional cooling power to quickly extract more product heat from seafood.

<em>ColdFront</em> Ultra Performance Spiral Freezer Brochure (471KB)

ColdFront Ultra Performance Immersion Freezer

ColdFront™ Ultra Performance Immersion Freezer

Help prevent your product from sticking together during the individually quick frozen (IQF) process. Our ultra performance immersion freezer helps you maintain precise seafood attributes while meeting the needs of your customers.

<em>ColdFront</em> Ultra Performance Immersion Freezer Brochure (238KB)

ColdFront Ultra Performance Flighted Freezer

ColdFront™ Ultra Performance Flighted Freezer

Get improved Individually Quick Frozen (IQF) capabilities with our flighted freezer. Flighted conveyors gently tumble seafood pieces, keeping them separate and maximizing exposure to cryogen for quick and thorough freezing.

<em>ColdFront</em> Ultra Performance Flighted Freezer Brochure (221KB)

ColdFront Cryo-Saver Tunnel Freezer

ColdFront™ Cryo-Saver Tunnel Freezer

The new ColdFront™ cryo-saver tunnel freezer approaches cryogenic freezing from an entirely new angle. The cryo-saver tunnel freezes and chills a wide variety of seafood products and minimizes the infiltration of processing area air improving the overall operational effectiveness.

<em>ColdFront</em> Cryo-Saver Tunnel Freezer (344 KB)

ColdFront Value Engineered Tunnel

ColdFront™ Value Engineered Tunnel Freezer

Ideal for seafood of varying shape and weight, the low capital VE tunnel freezer ensures quick and thorough freezing while maintaining the quality attributes of your product.

<em>ColdFront</em> Value Engineered Tunnel Freezer Details (203 KB)

ColdFront Continuous Rotary Chiller

ColdFront™ Continuous Rotary Chiller

Cool your seafood product rapidly to a selected temperature for further processing with our continuous rotary chiller.

<em>ColdFront</em> Continuous Rotary Chiller (61KB)

Diced Product Chilling

ColdFront™ Diced Product Chilling System

Reduce damage and moisture loss. Our diced product chilling system controls and maintains the temperature of your seafood product, leaving you with a higher yield of your high value product.

<em>ColdFront</em> Diced Product Chilling System (274KB)