The '30' Size Cylinder
One cylinder inflates approx. 30 x 9” latex balloons (or 16 x 11” latex balloons/12 x 12” latex balloons/14 x 18” foil balloons). Quantity of balloons achievable is dependent on the size and shape of your balloons. Cylinder can be be disposed of easily, just remove the valve and take to a steel recyclers, alternatively leave with road side collection if available. 
Balloons Are Not Included.
 
PLEASE BE AWARE
Helium is a safe, natural, non-toxic, non-inflammable, inert gas. However, although not poisonous, when inhaled it can be harmful, even deadly. When inhaling helium, the body & brain are deprived of oxygen which can result in suffocation. Also, helium is very cold when it leaves the tank & could freeze vocal chords. So please DO NOT INHALE.