Guest guest Posted January 27, 2003 Report Share Posted January 27, 2003 It's really quite simple. PPB just means a number relative to 1 billion. The calculation for for the example cited is X/1,000,000,000*100=0.01%. To solve for X its X=0.01*1,000,000,000/100. X=100,000 ppb. Now this is just the concentration of thimerosal in the vaccine solution, assuming it was formulated correctly ( a big assumption). If any public health nurses on this list have access to any of the older vaccines, please contact me. I would like to analyze them. -- In , " mbrookh <mbrookh@y...> " <mbrookh@y...> wrote: > -or others, > Is there a 'simple' way to calculate ppb of mercury in medical > products. The response that I repeatedly hear is that .o1%(or other > equally small looking amounts) could not be significant. The ppb > verbage seems to be more meaningful. thanks, B. Quote Link to comment Share on other sites More sharing options...
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