If you use a marker like dimethyl mercury, you will notice it is 3 times as dense as water, and 4-5+ times more dense than a large amount of alcohols and hydrocarbons (gasoline and light oil products). It also does not dissolve in water. So it is a marker that just sinks. Nice.
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If you use a marker like dimethyl mercury, you will notice it is 3 times as dense as water, and 4-5+ times more dense than a large amount of alcohols and hydrocarbons (gasoline and light oil products). It also does not dissolve in water. So it is a marker that just sinks. Nice.