Category: Chemical & HazMat
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You Do Not Neutralize Mercury
Metallic mercury has no pH. Sulfidation, amalgamation and complexation are different mechanisms, and none removes mercury. Plus the vapor density 7 misreading.
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Why 36.8% Remains After One Air Change
Move a whole room volume of air and 36.8 percent of the contaminant remains. Perfect mixing is why, and slicing it finely produces the constant e.
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Toxicity Is Not Risk: What VX Teaches
Toxicity is a property; risk is an outcome. What low vapor hazard really means for VX, how plumes and stability work, and why AEGLs are time-based.
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The 50 in LD50 Is Not Five Rats
The 50 in LD50 is a statistical probability, not an animal count. How LC50 differs, what each OECD guideline does, and how UN class and packing group work.
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Level C Is an Ensemble, Not a Suit
Level C is not a garment certification but an ensemble level. Levels A-D versus Types 1-6, penetration versus permeation, and how to read breakthrough time.