Thanks very much for posting this. Do you know has any work been done on the storage of DMSO in glass versus plastic. With DMSO's properties is it safe to store it in plastic? perhaps if it is PET type hard plastic it is OK. Would glass not be the safer option for DMSO? With thanks in advance, Sheila Tuesday, September 20, 2005, 10:17:42 PM, you wrote: TC> Please notice this: Very interesting!
TC> http://www.asapsolution.com/testresults.html TC> Silver in Glass vs. Plastic Containers TC> January 1, 2004 TC> Non-Toxicity Test TC> In order to insure not only the best product, but also TC> a safe product, American Biotech Labs hired an TC> independent laboratory to do a toxicology study on the TC> ASAP Solution. The test, called an LD-50 test, was TC> performed in accordance with the guidelines of the TC> Federal Hazardous Substances Act (FHSA) Regulations, TC> 16 CFR 1500. TC> In the test work, the ASAP Solution was given to a TC> number of both male and female test rats. The amount TC> of ASAP Solution given to the rats was 5g/kg, or the TC> equivalent of a 200 pound man taking 192 teaspoons of TC> about 4 full 8 ounce bottles of the ASAP 10ppm TC> solution at one time (the normal adult dosage is one TC> or two teaspoons/day). TC> As a result of the test work, the independent TC> laboratory made the following conclusion, "Under the TC> conditions of this study, there was no mortality or TC> significant evidence of toxicity observed in the rats. TC> The test article (ASAP Solution) would not be TC> considered toxic at a dose of 5g/kg by oral route in TC> the rat." TC> American Biotech Labs Safety Data TC> American Biotech Labs has had five independent safety TC> and toxicity tests completed on its 10 and 22 PPM TC> silver products. The American Biotech Labs product was TC> tested in animals at as much as 200 times the normal TC> adult dosage, or the equivalent of an adult consuming TC> 32 full ounces of the 10 ppm product at one sitting. TC> In conclusion to the animal tests, the independent TC> medical testing laboratory stated that the ASAP TC> Solution® was found to be completely non-toxic to the TC> test animals. The product was also tested for TC> cytotoxicity in both human epithelial cells and also TC> African green monkey or Vero cells, at both the TC> regular 10 ppm level and also at the extra-strength 22 TC> ppm level. In all four cytotoxicity tests the TC> Amreican Biotech Labs' products were found completely TC> non-toxic to both the human and Vero cells. TC> Silver in Glass vs. Plastic Containers TC> Introduction TC> A great deal of controversy has arisen in the market TC> place on the question of whether it is better to store TC> silver solutions in glass versus plastic containers. TC> There is a misconception that has prevailed in the TC> market place that glass is better. The idea that TC> glass containers are better for storing products which TC> contain silver has never been proven scientifically. TC> In fact, it has been reported in other studies that TC> glass may have a detrimental effect on silver TC> products. TC> Test Work TC> I have been conducting biological studies for 3 years, TC> in the laboratory of a major private institution, on TC> the use of silver products to kill and inhibit the TC> growth of bacteria. I have conducted thousands of TC> tests on numerous strains of pathogenic bacteria. In TC> the testing I have completed, I have used both glass TC> (5 ml glass test tubes) and plastic (Falcon 5 ml TC> polypropylene plastic test tubes). In some of the test TC> work we found that there was a difference in the TC> amount of silver that was needed to kill the bacteria TC> when glass was used versus plastic test tubes. In TC> order to make sure this was the case, it was decided TC> that the MIC tests (Minimum Inhibitory Concentration) TC> should be replicated by more than one person and a TC> direct comparison was made. The MIC tests were TC> performed in triplicate in both 5 ml 13X100mm glass TC> test tubes and 5 ml Falcon polypropylene plastic test TC> tubes. Results of the bacterial (MIC) tests showed TC> that Staphylococcus aureus was inhibited at 2.5 ppm TC> when the MIC test was performed in the plastic test TC> tubes. S. aureus was inhibited at 5 ppm when the MIC TC> test was performed in glass test tubes. This TC> suggested that the material with which the test tubes TC> were made, specifically glass or plastic, may have TC> effected the results of the MIC test. Numerous other TC> tests were also completed using larger concentrations TC> of bacterium and in those tests it was found that TC> there was no significant difference at all between TC> using the glass test tubes versus plastic test tubes. TC> Other Studies TC> The studies which I performed are not the only tests TC> showing that glass, in some circumstances, may have a TC> detrimental effect on silver products. It has been TC> noted in another independent study which has been TC> cited by other researchers that silver can adsorb to TC> glass (Chambers 1960; Thurman 1989). With this in TC> mind, it may have been possible that the silver could TC> have adsorbed to the surface of the glass test tubes TC> reducing the concentration of available silver TC> interacting with the bacteria which resulted in having TC> to use a higher amount of silver to kill the bacteria TC> when the glass test tubes were used. TC> Conclusion TC> In the test work I have completed as well as in other TC> available studies, it was found that glass may, in TC> some cases, have a detrimental effect on silver TC> products. While it can be said that glass did not TC> always show the detrimental effect, it can also be TC> stated that we found no problems at all with using the TC> plastic instead of glass. Our tests, in conclusion TC> with the other available independent study (1Chambers TC> et al. and 2Thurman et al.), would suggest, by TC> inference, that silver products should not be stored TC> in glass containers which could reduce the available TC> concentration of silver, but rather in a high quality TC> plastic container. TC> Respectively, TC> David A. Revelli, MS TC> References TC> Chambers, C. a. C. P. (1960). The Bacteriological and TC> Chemical Behavior of Silver in Low Concentration. TC> Cincinnati, OH, Division of Water Supply and Pollution TC> Control, U.S. Department of Health, Education, and TC> Welfare. TC> Thurman, R. a. C. G. (1989). "The Molecular Mechanisms TC> of Copper and Silver Ion Disinfection of Bacteria and TC> Viruses." CRC Critical Reviews in Environmental TC> Control 18(4): 295-314. TC> __________________________________________________________ TC> Find your next car at http://autos.yahoo.ca TC> -- TC> The Silver List is a moderated forum for discussing Colloidal Silver. TC> Instructions for unsubscribing are posted at: http://silverlist.org TC> To post, address your message to: silver-list@eskimo.com TC> Silver List archive: TC> http://escribe.com/health/thesilverlist/index.html TC> Address Off-Topic messages to: silver-off-topic-l...@eskimo.com TC> OT Archive: TC> http://escribe.com/health/silverofftopiclist/index.html TC> List maintainer: Mike Devour <mdev...@eskimo.com>
