Quote:
Originally Posted by mikeyis4dcats.
The test used by the FBI (which had only ever been used once before in the OJ trial) didn't have any validation as to what limits it could detect EDTA. Say if there were 100ppm EDTA in a sample, if the test can't detect anything less than 500ppm it's useless. It will give a false negative. The FBI never developed (or at least admitted to) a tolerance. Also, EDTA degrades in the presence of UV light, so daylight would further degrade it. As to the FBI, as stated the test is defective, so they wouldn't need to intentionally do anything, though upholding public perception of law enforcement as trustworthy is paramount.
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Was this something covered in the documentary, or is this from personal knowledge (EDTA)? Yeah, it's pretty sketchy no matter how you slice it.