Test 5 : Dipped In Caustic Soda, Cont.
With the SanDisk USB key, which is not leak-proof, it was a different story. During the test, a week ago, the key stopped working. So we replaced it with another USB key for the subsequent tests. But a week later (we do one test per day), it started working again.
Verdict: It stopped working, but came back to life a week later.