Review on Robinair (34102) R-134a Refrigerant Tank - 30 lbs (refrigerant not included) by Jorge Maertz

Most of the bad reviews are because people don't understand what they are buying. It doesn't have refrigerant, it's not designed for it, it doesn't weigh 30 pounds, it doesn't exactly hold 30 pounds. It holds about 26 pounds because you don't want to fill the tank 100%, it's not safe. This is a good tank, filled with nitrogen at about 15psi with instructions on how to evacuate and fill with desired refrigerant, has two 1/2" connections which I converted to 1/4" and I use it for that Refrigerant r-134a . No leaks and works fine. This is exactly what you need if you are some kind of AC specialist.