Green Grey AS No.N32

• Can cause the nose to sting.
• Will collect in ducts, drains and low lying areas e.g. cellars.
• At high concentrations, instant unconsciousness may occur followed by death.
• Much heavier than air.

Pewter AS No.N63

• Odourless.
• No warning signs before unconsciousness occurs.
• At high concentrations, instant unconsciousness may occur followed by death.
• Heavier than air.
• Does not burn.
• Largely Inert.

Peacock Blue AS No.T53

• Odourless.
• No warning signs before unconsciousness occurs.
• At high concentrations, instant unconsciousness may occur followed by death.
• Heavier than air.
• Does not burn.
• Inert.

Brown AS No.X54

• Inert but asphyxiant at high concentrations - lighter than air.
• DO NOT INHALE UNDER ANY CIRCUMSTANCES.

Silver, grey or galvanised

• LPG is 'stenched' (odourised) and has a distinctive odour.
• It will ignite and burn instantly from a spark or piece of hot metal.
• Is heavier than air and will collect in ducts, drains etc., and low lying areas.
• Fire and explosion hazard.
• Highly flammable.
• Eliminate all ignition sources.

Claret AS No.R55

• Distinctive garlic smell.
• Fire and explosion hazards are greater than LPG but it is slightly lighter than air and less likely to collect in ducts and drains.
• Requires minimal energy to ignite in air or oxygen.
• Do not use with copper, high copper or brass alloys because copper materials form explosive compounds with Acetylene.

Signal Red AS No.R13

• Odourless.
• Much lighter than air.
• Will collect at the highest point in any enclosed space unless ventilated at high level. Invisble flame.
• Fire and explosion hazard.
• Very low ignition energy.
• Burns with an invisible flame.

Black AS No.N61

• Odourless.
• Generally considered non-toxic at atmospheric pressure.
• Will not burn, but supports and accelerates combustion.
• Materials not normally considered combustible may be ignited by sparks in oxygen rich atmospheres.
• No oil, grease or lubricants should come into contact with oxygen.