How do you inflate a foil balloon with helium?
Carefully insert the nozzle of the helium canister into the valve opening (the large tab at the bottom of the balloon). Hold the balloon straight so that the valve does not get bent. Open the valve on the gas canister to allow helium into the balloon.
Inflate the balloon slowly, allowing the smaller sections to fill before the main body of the balloon is filled.
Remove the helium canister nozzle and the valve on the balloon automatically closes. To refill the balloon the valve can be gently opened and closed after re-inflation.
Your inflated balloon should yield slightly when you press on it. If it is not flexible it means that your balloon is overfilled.
If, after inflating your balloons, you still have helium in your canister, store the canister and the remaining helium can be used on another occasion.
Tie a balloon ribbon on to your balloon and fix the other end to a balloon weight or piece of furniture so that the balloon does not float away.
Never allow foil balloons to float away in the open air, especially not near overhanging power cables.