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According to Smiths Detection, which supplies airport security scanners including the latest CT scanners, only its Hi-SCAN 6040 CTiX scanner is currently approved for scanning liquids, aerosols and gels of more than 100ml


Restrictions on liquids remain – here’s why


Analysis: Revised standards for CT scanners put rules on hold, says Ian Taylor


The 100ml restrictions on liquids in hand luggage at airports, largely in place since 2006, were supposed to be gone by now, at least in the UK. They have not, despite repeated


announcements to the contrary. A major reason is that safety certification for computer tomography (CT) scanners producing 3D X-ray images of up to two litres of liquids in passengers’ hand baggage was abruptly withdrawn last summer. Richard Thompson, portfolios,


innovation and digital vice-president at Smiths Detection, which makes the


48 14 AUGUST 2025


only CT scanners currently approved for screening liquids, aerosols and gels of more than 100ml in bags, explained that as installation was proceeding last summer: “We were notified we were required to do additional testing. “What we needed to test against is


sensitive information, but the two-litre allowance was retracted. We went back to 100ml, and the regulator rewrote the testing methodology, challenging us all to rewrite the algorithms. “We rewrote the algorithms


quickly, literally in a couple of months, but it has taken ages to get


[the test results] through the labs. There was testing, retesting, and you might pass a test in Germany, and the German authorities are happy with the results, but you still can’t get over the restrictions in other European countries. “We’ve been slowly getting


through national testing in the last four to five months. [But] we’re not back to where we were last year where all 44 member states of the European


Continued on page 46 travelweekly.co.uk


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