Hi! Just for information. Yesterday I was travelling abroad via Manchester Airport. Like the previous time my hand luggage got specially checked because of my peakflow meter. I always carry the PF meter in my hand luggage as I have had the experience of my hold luggage going awol, and I don’t want it go astray.
Last time, a couple of months ago, I hadn’t put it in the tray, so it got picked up on. However, when the security guy asked me he immediately knew what it was. Since then I tend to put my peak flow meter in the tray, and that way I have got through checks in Sweden, Leeds and Budapest without comment. Yesterday, however, in Manchester, even though it was in the tray, on display, it did get picked up on, but again, the guy who dealt with it knew exactly what it was. He also said it was better to do what I was doing, putting it in the tray. (I also have a standard letter confirming my need for it. I have never yet used it.) Apparently there is some sharp part inside the tube, which is what they are reacting on.
It has always been fine in the end. It seems that the Manchester security are particularly nit picky - my husband had a small pack of paper tissues taken off him and binned.
I find it helps me to try to hang onto as philosophical an attitude as possible for these security checks.