*contacts trading standards*
Although I'm not sure if there are any technical precedents on what state matter is referred to, but I would invision that it is unwritten to be at room temperature unless otherwise stated.
(
Jeru War and Piss,
Sun 25 May 2008, 23:08,
archived)
It might
be sealed at a very low pressure.
(
Toucan - http://www.titmonday.com,
Tue 27 May 2008, 13:17,
archived)