As of 30 June 2007, liquids and gels in any volume, purchased at airport retail outlets (e.g. Dubai Duty Free) or on board the aircraft, will not be allowed through security screening points, unless they:

are carried in a Security Tamper-Evident Bag (STEB); and

have been protected from unlawful interference by a process of supply chain security (as applied in Dubai).

http://www.emirates.com/english/help...x?faqId=214952