This is to recertify CO2 tanks / Cylinders of any size. Recertification can take up to 4 weeks depending on how busy the recertification center is. 

How Do I Know If My Tanks Needs to Be Recertified?

• Tanks that have not been recertified in 5 years will need to be re-certified again.
• If the tank that needs to be recertified is in our CO2 exchange program, we will cover any recertifications for it. (ie, you swapped a tank out, and while you were in possession of the tank it passed the 5 year recertification mark, we will not charge you for it to be re-certified.)