Balloon Gas Cylinder Facts

 

What to Do

  • Read, understand and observe the safety precautions on the cylinder neck label and the warning on the side of the cylinder.
  • Use a cylinder hand truck to move cylinders.
  • Always store cylinders in a well ventilated area and in an upright position so that they cannot be tipped or pushed over.
  • Transport cylinders only in a well ventilated truck.
  • Always use a regulator designed for balloon filling operations. Contact your supplier if questions arise or if more information is needed.
  • Check all connections for leaks before filling balloons.
  • Do not use leaky equipment.
  • Close the cylinder valve after each use and when the cylinder is empty.

balloon gas

helium gas

What Not To Do

  • Do NOT leave cylinder unattended.
  • Never place cylinder where it could come into contact with an electrical circuit.
  • Do NOT store cylinder in direct sunlight or near sources of radiant heat.
  • Never use cylinders as rollers.
  • Never allow cylinders to drop or strike together violently.
  • Do NOT allow anyone to breathe helium from cylinders or from filled balloons, although not poisonous it can result in asphyxiation.
  • Do NOT allow children or any unauthorised persons to handle cylinders or use balloon filling equipment.
  • Never transport the cylinder with the filling nozzle attached, as this could cause damage and will be charged for.

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Inflation Guide

Please note inflation figures are approximate and for guidance only. Allow a 5% margin on these figures. Inflation size, temperature, atmospheric pressure and inflation technique are all variables that will affect the number of balloons inflated.

Not too little! Not too much! Inflate your balloon to the specified size, so that you don't waste gas and pop the balloon. A 10" balloon inflated to 12" uses twice the gas.
Balloon Diameter
Small Cylinder
Medium Cylinder
Large Cylinder
8"
375
750
1,800
9"
290
576
1,442
10"
200
400
1,000
11"
160
318
800
12"
110
220
580
14"
75
150
380
16"
50
100
258
18"
35
70
180
20"
25
50
130
22"
19
39
99
24"
15
30
76
30"
7
15
39
36"
4
7
20
40"
3
5
15
48"
1
3
9
60"
1
2
5
72"
0
1
2
18" Foil Balloons
125
250
620

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Health & Safety Information

Helium is a colourless, odourless compressed gas. It is shipped as a compressed gas (at pressures up to 300 bar) in high pressure steel cylinders or as a liquified gas in suitable vacuum dewars.

Helium is extremely inert.

There are no known toxicological effects or ecological damage caused by this product. Under no circumstances should helium be inhaled due to the hazardof asphyxiation.

 
Chemical Formula He
Atomic Weight

4.0026g
Specific Volume (@21'C, 1.01325 bar) 6030.4ml/g
Vapour Pressure (@21'C) n/a
Boiling Point (@ 1.01325 bar) -268.94'C
Absolute Density Gas (@24'C, 1.01325 bar) 0.1656g/l
Relative Density Gas (@24'C, 1.01325 bar) (Air =1) 0.138
Critical Temperature -268'C
Critical Pressure 2.29 bar
Flammability Limits in Air (volume %) non-flammable
Details given here are believed to be correct at the time of writing. Whilst proper care has been taken in the preparation of this document, no liability for injury or damage resulting from its use can be accepted.

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