Originally Posted by BubbaLoop

A chemical solution containing explosives volatile enough to reach detectable levels on a test strip would be very volatile and unstable indeed (and certainly not peroxides, which seem to be the primary fear of the TSA and are not even remotely volatile enough to be detected by test strips in the air above). Besides, developing test strips with water is beyond believability. It suggests to me these are original dipsticks that are being used in an alternate (and useless) fashion. But I may be wrong, and the idea of this thread is to try to find out.

By the way, as discussed, here, I detect peroxides for a living.