Cylinders of helium gas come in 4 sizes, so the number of balloons you can fill depends on the size of the cylinder chosen.

 

Use the chart below to determine the size of the cylinder you need. It shows the avarage number of balloons that can be expected from each size of the cylinder when the balloons are fully inflated to sizes shown.

 

Helium gas is a safe, non-flammable, non-poisonous gas, which is lighter than air. It can be used safely either indoors or outdoors.