FlyerTalk Forums - View Single Post - TSA wielding Magic Paper?
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Old Jan 16, 2010 | 11:56 pm
  #20  
Sean5294
 
Join Date: Jan 2010
Location: Cincinnati CVG
Posts: 284
They are very similar to Ph strips you would use to test a swimming pool. I would be willing to bet that they are supposed to dipped into a liquid.
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