PSI has nothing to do with "gas capacity" 5" latex balloons take .06 cubic feet of air, nitro, or helium. Don't use helium in 5" latex balloons, but I'm sure you know that.
Rating
Filling balloons with air by: Margit
You mentioned a pressure of 2000 - do you know in which units the pressure is measured in your canister? Most common ones are pascal (pa), bar and atmosphere (atm).
If you make a purchase through a link on my site, I may receive a small commission at no extra cost to you. I only recommend products that I believe to have good value (affiliate disclosure).