When buying CO₂, the "purity grade" matters depending on your application:
Most people buy CO₂ in small pressurized cartridges or cylinders. buy carbon dioxide
Purchased by businesses to comply with emission limits. When buying CO₂, the "purity grade" matters depending
Used for welding or chemical manufacturing. When buying CO₂
Small cartridges for paintball guns, aquarium CO₂ systems, or bicycle tire inflators can be found at sporting goods stores or pet shops.