[hazardous]| Helium gas for inflating balloons

1 Helium canister inflates up to:

50 x 9" Latex balloons or
28 x 11" Latex balloons or
21 x 12'' Latex balloons or
24 x 18" Foil balloons.

Float time for latex balloons : 5-7 hours.
Float time for foil balloons : 3+ days.