FlyerTalk Forums - View Single Post - Investigation into TSA non-dipping test strips
Old Jul 9, 2012, 1:02 pm
  #6  
BubbaLoop
 
Join Date: Dec 2008
Posts: 1,444
Originally Posted by Ysitincoach
Do you know if the pH test strips are immersed in an aqueous solution prior to test "air test?"

If they are dry, I'm pretty sure there is testing for air dry samples of pH test strips in vapors. They obviously use a different color chart than aqueous tests, and are less accurate...but what does that matter when related to security theater? It's the mere appearance that you are testing that counts.
These are not pH strips. They claim them to be similar to pH strips, and to detect "explosives" without immersion into the liquid, just by being waved above it. That is the precise reason I wanted to try to find out more about them. Seems pretty magical to me...
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