Originally Posted by Dan Dare
In addition how long does it take to mix two liquids?
It's not the length of time or the size of the containers. It's the practicality or realism of someone being able to take bottles of dangerous noxious chemicals with their inherent instability and strong odors into the lavatory undetected (or mix them at their seat), mix them into an explosive brew, then connect, rig and detonate a fuse to explode the mixture.
It's only that easy in Bugs Bunny cartoons - not in real life.
Could such a plot be planned? Sure. Is it practical to carry out? Not really. Is it a big enough threat to justify what the TSA is doing? Not even close.
There are chemical trace analyzers on the market right now that would render the entire question of this threat moot. Did the TSA buy any of them? Not even one that I'm aware of.