On Nov 24, 2007, at 9:33 PM, Jodi wrote:
Numerous other tests were also completed using larger concentrations of bacterium and in those tests it was found that there was no significant difference at all between using the glass test tubes versus plastic test tubes.
It states that this effect was only found when using more dilute solutions than we use. 5 ppm was effective, and the standard used these days is usually 10 ppm.
There are other concerns I have heard raised by some sensitive individuals, about the possibility of chemicals leaching from the plastic due to the low pH of the silver solution. In my humble opinion, this is a distinct possibility that might affect a few individuals who are extremely sensitive to those particular chemicals. In that case, using and storing in glass containers is a good option, providing that at least a 5ppm solution is used (according to the above research study).
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