Refinement Level News Today

Samples, if they have been exposed for some days previously, you can identify by chemical analysis whether you have actually seen sarin present. that would be a signature. >> is that conclusive proof? >> yes. you can develop a series of tests and ultimately some very refined determinations through laboratory testing. you can see the area that was presumably exposed was definitely exposed to this chemical. >> couldnt there be false positives? >> you could initially get false positives. not all te...