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The FDA allows this slightly contaminated product to be sold in the US because the Recommended Daily Allowance for vitamin C is a mere 60 milligrams per day. Taken at that level, the toxic metals would, as the FDA sees it, do no harm. However, many users of vitamin C take 100 200 times the RDA. The cheap form of C would expose them to potentially toxic levels of heavy metal poisons.
There will be old Wilson, with his diamonds and palaver, expatiating on the country and the mines; and Blaisdell, with that dignified way of his, talking of nitrates and sulphides, and so many milligrams equaling so many grains troy, and so many gramestons in so many pounds avoirdupois, and all that razzle-dazzle, and Rivers, not saying much of anything, but smiling, and calculating how many thousands he is going to put in his own pockets."
It seemed that there were in the safe twenty-five platinum tubes of one hundred milligrams each, and that there had been twelve of the same amount at Pittsburgh. Little as it seemed in weight it represented a fabulous fortune. "You have not the combination?" inquired Kennedy. "No. Only Mr. Denison has that. What are you going to do to protect the safe to-night?" she asked.
"We have found iron easily obtained and in unthinkable quantity not in fractions of milligrams, but in millions upon unmeasured millions of tons! Send our sister ship here as once!" "Nerado!" The captain was called to one of the observation plates as soon as he had opened his key. "I have been investigating the mass of iron now nearest us, the small one.
As has been said the element has never been isolated or separated in its metallic or pure state and most of the compounds are impure. Radium banks have been established in London, Paris and New York. Whenever radium is employed in surgery for an operation about fifty milligrams are required at least and the banks let out the amount for about $200 a day.
It was about one-third the diameter of a red corpuscle of blood and its weight had been estimated as about .00685 milligrams, truly a fairy thread. It was finer than the most delicate cobweb and could be seen with the naked eye only when a strong light was thrown on it so as to catch the reflection.
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