In a message dated 9/29/2001 11:01:11 AM Eastern Daylight Time, [email protected] writes:
> Kevin Nolan wrote: > > > Interesting too what "Ole Bob" had to say about HVAC with and without = > > CO2 blanket. The clear implication is that without it (CO2) one runs a = > > strong chance of brewing a significant fraction of silver as silver = > > nitrate solution - generally considered it seems as a pretty = > > undesireable form of silver. > > Bob's statement does not apply to the HVAC method as it is generally > implemented. His statement is specific for only the HVAC ARC method that he > uses. > > frank key > Frank: Even in that regard, sputtered silver formed from a "blanketless" HVAC Arc generates such a high rate of silver ion production that nitrate concentration can be ignored according to one published EPA reference I found. When one looks at the EPA's probably very conservative nitrate tolerances, there is very, very little risk of ingesting anything close to toxic nitrate levels, even if the CS is taken prophylactically. However, if one does choose to make CS by this method, a nitrate analysis should always by made on the final lot as a precautionary measure. Roger
