Passengers due to use Dublin Airport over the coming period are being warned about temporary changes to the rules around carrying of liquids in hand luggage.
From Sunday, all passengers passing through both terminals will have to be prepared to take all liquids, aerosols and gels from their hand luggage before passing through security.
All of these substances will also have to be under 100mls in size.
Dublin Airport operator, daa, said the rules will vary between the two terminals.
For those using Terminal 1, liquids have to be under 100mls, in a clear 1 litre bag and placed visibly within the security tray, with each passenger limited to a single 1 litre bag only.
Large electrical items such as laptops and tablets should be removed from bags and placed in the security tray.
But for those passing through Terminal 2, while all liquids must also be in containers under 100mls and in a clear bag in the security tray, there is no limit on the number of clear bags containing 100mls containers that a passenger can take through.
All electrical items can also be left in hand luggage.
"These changes, which apply to all airports in Ireland and Europe with C3 scanners, are being introduced at a time when the roll-out of new C3 scanners is ongoing at Dublin Airport," said Gary McLean, managing director of Dublin Airport.
"That roll-out is at different stages in Terminal 1 and Terminal 2, which means the guidance for passengers is slightly different depending on what terminal they are departing from."
"In Terminal 2, all of the security lanes in operation are now fitted with new C3 scanners, so all passengers are assured of using a C3 scanner."
"However, in Terminal 1, due to the age of the building, the roll-out is taking slightly longer, so it cannot be guaranteed whether a passenger will go through a lane with C3 scanners installed or the older technology. As previously communicated, the rollout of C3 scanners across both terminals is on track for completion by October 2025."
The changes are the result of a decision by the EU at the end of July, following the raising of questions about the reliability of the new C3 scanners.
The new state-of-the-art scanners were to allow passengers carry liquids of any size and electronic devices in their hand luggage without having to remove them as they go through the scanner.
But the EU recently ordered a return to the previous system limiting containers to 100ml and requiring electronics to be taken from the bag, after a technical report was sent by the European Commission to the European Civil Aviation Conference last May.
It questioned whether the software could guarantee the reliability of the scanners for containers containing more than 330ml.
As a result, temporary restrictions have been put in place on the C3 scanners as a precaution until the issues are addressed.
"Passengers' safety and security remain our top priorities and we thank passengers for their understanding as we introduce these changes and as the roll-out of the fantastic new C3 scanning technology continues at pace at Dublin Airport," said Mr McClean.
"We hope that these temporary restrictions are only in place for a short period and that the EU will be able to lift them as soon as possible."
