It's better than expected !!!
Helium is very good: I have the foil balloon filled (bulging) and he floated almost to the ceiling and 3 days later!
The helium is more than adequate: both the foil balloon and the balloon 30 provided I filled until they flew. And there was still something in the bottle! (I finally can fill a total of about 50 balloons.)
For helium inhalation (for funny voice) it is not suitable. On the one hand you have to be very careful (minimal open, otherwise it is too strong and can be very dangerous) to the pressure, on the other hand, it is health not well suited (we tested it, but only 1 time because we have realized that there something has to be in it - it tasted unlike our chemistry teacher at the time).
So:
- You can very many balloons fill.
- Foil balloons fly very long.
- For "funny sayings" DO NOT USE !!!
