Also, since it's not something you'd synth, and put inside a shell why would it be there?
Well, lots of reasons. You could have stored it somewhere you tested the agent, you could be testing for a byproduct that's there for some other arcane reason.
Look, I'm not saying it wasn't a chemical shell, I'm just saying it'd be intresting to know. If it was a binary delivery system with the two compunds that combine to make Sarin and HCL, fantastic. Were that the case, though, you'd think they'd be making a bigger deal out of it.
If they just tested it for HCL, which some tests do, well hell, I adjust the ph of my swimming pool with HCL.
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