Aerosol labeling question

[hdavison]

What measure is indicated in the rectangle on the back of an aerosol can (after the net wt declaration)?

[trilobite]

Not sure what you mean. Are you referring to the 'e' next to the volume?
eg; 275ml e
This large lower case 'e' stands for 'european' and means that the volume conforms to European regulations on packaging weight variances.

For example, if you bought a 1kg bag of rice, you would expect it to contain at least 1kg of rice or. if you are lucky, a bit over. Due to the nature of the industrial process, packaging plants can not always perfectly measure the exact weight/volume/etc. It is in the manufacturer's interest to be as close to the target weight as possible - but not under ('underselling') or over (giving it away!)
The European regulations stipulate the VARIANCE ie the max limits above and below that the final weight can vary by from the stated weight and the 'e' shows the product conforms to these standards.

You're now going to tell me that your question was about something else.... ;-)

[Hippy]

The number in the rectangle indicates the propellant used to squirt the contents out of ther can, or rather the Internationally agreed code relating to this. Chloro-Flouro-Carbon compounds used to be used until it was discoverd that the worldwide release of these gasses caused damage to the atmosphere. Governments and manufacturers largely agreed to replace the nasty chemicals with less damaging ones, and that number in the rectangle is a statement by the manufaturer that they have done so.

[hdavison]

I have since found the answer. Its the brim full capacity of the can.