If it’s anything like SCUBA tanks, then the 800M cu ft is specified at 1 atm at room temperature. It’s a actually an intuitive way to express how much gas you’r

If it’s anything like SCUBA tanks, then the 800M cu ft is specified at 1 atm at room temperature. It’s a actually an intuitive way to express how much gas you’re getting. Specifying it by N would be borderline incomprehensible to most people.