On 6/13/2014 2:37 PM, Alan Faulkner wrote:
Dollar stores ebay
http://www.ebay.com/sch/i.html?_odkw=dropper+bottles&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR4.TRC2.A0.H0.Xglass+dropper+bottles&_nkw=glass+dropper+bottles&_sacat=0
Search dropper bottles small spray bottles etc on ebay.
I would tend to avoid plastic just on principle although I do use some.
I make my own so I just use old water bottles.
Al
I can't imagine taking just drops of cs and of course the dropper makes
the bottle more expensive. I did just research using glass vs plastic
and found this study that showed glass was less effective than plastic,
just the opposite of what I would have thought. I read other webpages
that said as long as you use BPA free plastic you are fine. I'm thinking
that for shipping plastic would be better because of breakage. The USPS
is rough on mail, even when clearly labeled fragile.
Cyndi
I found this for the glass vs plastic debate:
Silver in Glass vs. Plastic Containers
by David A. Revelli, MS
Introduction
A great deal of controversy has arisen in the market place on the
question of whether it is better to store silver solutions in glass
versus plastic containers. There is a misconception that has prevailed
in the market place that glass is better. The idea that glass containers
are better for storing products which contain silver has never been
proven scientifically. In fact, it has been reported in other studies
that glass may have a detrimental effect on silver products.
Test Work
I have been conducting biological studies for 3 years, in the laboratory
of a major private institution, on the use of silver products to kill
and inhibit the growth of bacteria. I have conducted thousands of tests
on numerous strains of pathogenic bacteria. In the testing I have
completed, I have used both glass (5 ml glass test tubes) and plastic
(Falcon 5 ml polypropylene plastic test tubes). In some of the test work
we found that there was a difference in the amount of silver that was
needed to kill the bacteria when glass was used versus plastic test
tubes. In order to make sure this was the case, it was decided that the
MIC tests (Minimum Inhibitory Concentration) should be replicated by
more than one person and a direct comparison was made. The MIC tests
were performed in triplicate in both 5 ml 13X100mm glass test tubes and
5 ml Falcon polypropylene plastic test tubes. Results of the bacterial
(MIC) tests showed that Staphylococcus aureus was inhibited at 2.5 ppm
when the MIC test was performed in the plastic test tubes. S. aureus was
inhibited at 5 ppm when the MIC test was performed in glass test tubes.
This suggested that the material with which the test tubes were made,
specifically glass or plastic, may have effected the results of the MIC
test. 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
Other Studies
The studies which I performed are not the only tests showing that glass,
in some circumstances, may have a detrimental effect on silver products.
It has been noted in another independent study which has been cited by
other researchers that silver can adsorb to glass (Chambers 1960;
Thurman 1989). With this in mind, it may have been possible that the
silver could have adsorbed to the surface of the glass test tubes
reducing the concentration of available silver interacting with the
bacteria which resulted in having to use a higher amount of silver to
kill the bacteria when the glass test tubes were used.
Conclusion
In the test work I have completed as well as in other available studies,
it was found that glass may, in some cases, have a detrimental effect on
silver products. While it can be said that glass did not always show the
detrimental effect, it can also be stated that we found no problems at
all with using the plastic instead of glass. Our tests, in conclusion
with the other available independent study (1Chambers et al. and
2Thurman et al.), would suggest, by inference, that silver products
should not be stored in glass containers which could reduce the
available concentration of silver, but rather in a high quality plastic
container.
Respectively,
David A. Revelli, MS
References
Chambers, C. a. C. P. (1960). The Bacteriological and Chemical Behavior
of Silver in Low Concentration. Cincinnati, OH, Division of Water Supply
and Pollution Control, U.S. Department of Health, Education, and Welfare.
Thurman, R. a. C. G. (1989). "The Molecular Mechanisms of Copper and
Silver Ion Disinfection of Bacteria and Viruses." CRC Critical Reviews
in Environmental Control 18(4): 295-314.
http://www.lifesilver.com/faq.htm
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