enough to put on the label! why purposely ingest mercury, the most toxic non-radioactive element known to man?
Bromine,arsenic,lead..these things I am sure I get plenty of from my air and life on this planet without adding to it knowingly. some people do believe that the body can pick and choose when given many minerals at once including the toxins, but some believe in never adding to our toxic intake whenever we have a choice. it is pretty near impossible to find a mineral drop supplement to remineralize the water that does not have the unwanted ingredients from seawater. maybe someday there will be an affordable way to remove these poisons and have some nice clean mineral drops to use. I do like concentrace, maybe it is better to use that in drinking water than taking in pure but dead water. (like distilled)