ppm and mg/l are the same.
  ----- Original Message ----- 
  From: Silver Smith 
  To: [email protected] 
  Sent: Wednesday, May 23, 2007 7:09 PM
  Subject: CS>Concentration?....ppm?


  I was reading some info on Argyria and came across the following statement, 
"The amount of silver required to develop Argyria is estimated to be 3.8 grams 
per day"  

  I have two questions about that statement.

  1.  If you are drinking a 10ppm "concentration" of CS/EIS, how many ounces or 
milliliters (ml)  of the 10ppm CS/EIS would you have to drink to reach the 3.8 
grams for a day.

  2. How many days would you need to drink it to "get it" (argyria)?

  I need a bit of help fully understanding what we mean in terms of 
concentration when we use ppm as the "unit of concentration". I understand that 
ppm = parts per million.   I assume that would  be  "parts of silver" per some 
unit of volume (water)?  In the clinical lab we measure concentration of 
analytes in the blood in mg/dl or ug/dl......etc.  So would ppm be microgram 
(ug-1millionth of a gram) per some volume of water?  What would the volume of 
water be? 

  Thanks,

  SS





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