What Is Industrial Grade CO2?

Industrial grade CO₂ is carbon dioxide gas produced and purified to meet specific quality standards for use in manufacturing, processing, and general industrial applications. It’s one of several purity grades of CO₂ on the market, and it’s the workhorse version that shows up in everything from welding operations to water treatment plants.

If you’re sourcing gas for your operation, understanding what “industrial grade” actually means can save you money and prevent headaches down the road. Let’s break down what makes this grade what it is.

What Purity Level Is Industrial Grade CO₂?

Industrial grade CO₂ typically has a purity of around 99.5% or higher, with the remaining fraction made up of trace impurities like nitrogen, oxygen, or moisture. That purity level is more than sufficient for most industrial processes, but it’s not refined to the exacting standards required for food, beverage, or medical use.

CO₂ isn’t just CO₂. The gas gets classified into different grades based on how it’s produced and how many contaminants remain after purification.

Industrial grade sits below food grade and medical grade on the purity ladder.

Here’s how the grades typically stack up:

• Industrial grade: around 99.5% purity, suited for manufacturing and general industrial use
• Food grade: higher purity with stricter contaminant limits, required for carbonating beverages or food packaging
• Medical grade: the highest purity standard, regulated for use in clinical and healthcare settings

Industrial grade CO₂ is often captured as a byproduct of other industrial processes, like ammonia production or fermentation, then purified to meet spec. It doesn’t need the additional filtration steps that food and medical grades require, which is part of why it’s more cost-effective for bulk industrial use.

Why Does the Grade of CO₂ Actually Matter for Your Operation?

The grade matters because using the wrong one can either waste money or create compliance problems. If your process doesn’t require food-grade purity, paying for it is throwing cash away. On the flip side, using industrial grade CO₂ in a food or beverage application isn’t just a bad idea—it’s a regulatory violation that can shut down a production line fast.

Think of it like fuel. You wouldn’t put race fuel in a delivery truck. It’s overkill, and it costs more for zero added benefit.

Industrial grade CO₂ is priced and produced for operations where trace impurities won’t affect the outcome. Manufacturing plants, water treatment facilities, and metal fabrication shops don’t need the same purity a beverage bottler needs.

There’s also a supply chain angle here. Because industrial grade CO₂ is produced in higher volumes and requires less refinement, it’s generally more available and easier to source in bulk. That matters if you’re running a facility that goes through large quantities regularly and can’t afford to wait on a specialty order.

What Does Industrial Grade CO₂ Get Used For?

Industrial grade CO₂ shows up across a wide range of manufacturing and processing applications where high purity isn’t a strict requirement but reliable supply is. It’s used in metal fabrication for shielding gas blends, in water treatment for pH control, and in chemical processing as a raw material or process gas.

You’ll also find it in pneumatic systems, pressure testing, and inerting applications where oxygen displacement is the goal rather than food safety compliance. Some manufacturing environments use it to create controlled atmospheres for material handling or to prevent oxidation during processing.

How Should You Choose Between CO₂ Grades for Your Facility?

Choosing the right grade comes down to matching your process requirements to the appropriate purity level, and getting this wrong either costs you unnecessarily or puts you at compliance risk. Start by asking whether your CO₂ will have any direct or indirect contact with food, beverage products, or medical applications. If the answer is no, industrial grade is almost certainly your answer.

If your facility runs multiple processes, some might need food grade while others are fine with industrial grade. It’s worth auditing your gas use line by line instead of defaulting to one grade across the board. Facilities that do this often find they’ve been overpaying for higher-grade gas in applications that never needed it.

Working with a gas supplier who can walk through your specific processes helps here. Not every distributor takes the time to match grade to application, and that’s often where unnecessary costs creep into a gas budget. A straightforward conversation about what each part of your operation actually needs can clear up a lot of confusion fast.

Storage and handling requirements are similar across grades, but documentation and certification are not. If you’re audited or need to prove compliance for a specific application, having the right paperwork tied to the right grade is important.

Getting the Right Grade for the Job

Industrial grade CO₂ is designed for manufacturing and processing environments. Knowing where it fits, and where it doesn’t, is the difference between getting the gas you need without overpaying and bleeding money or courting compliance risk.

Tyler O'Brien

Tyler is a results-driven marketing professional specializing in the industrial gases and equipment industry, bringing his 10 years of technical expertise and digital marketing acumen to the complex industrial gas B2B environment.