Certification of UF₆ Cylinder Volume

• The cylinder manufacturer has to fill the newly fabricated cylinders with 60°F water, weigh it, and stamp the water weight on the cylinder name plate.
  
  This water weight, when divided by 62.37 (the weight of one foot of water at 60°F) expresses the cylinder volume in cubic feet.
  
  The cylinder volume so derived must be greater than the minimum specified in the ANSI N14.1 Standard.