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Hi everyone, Another search for an answer. Does anyone know the MDL for Lead Acetate paper detecting hydrogen sulfide? More importantly, is that number less then 0.88ppm? I'm trying to streamline a test with a pre-analysis prior to analysis. Our MDL is 0.88ppm, so if the paper will react to lower concentrations then I can say negative paper is below detectable limits saving me from a very annoying test. Will need a legal and scientifically accepted reference to ammend to our SOP. As always thank you to everyone for making my stressful job easier. On a side note, those nasty samples have been repackaged to be shipped back to the origin. I'm very happy to have them far away from me. I will be forever greatful for the support that everyone provided during the investigation. I can not thank everyone individually, there was just to many helpful people. -Andrew