I have a friend in Tuscon, a former grad school house mate, who has a generator that makes excellent colloidal silver water. His model is no longer available. It used 12,000 volt low amp discharges between a silver wire and a silver block immersed in water to produce the particles mostly in the .003 to .008 micron diameter range. The voltages used are in the range of those in older TV HV picture tube circuits and were deemed a hazard. Currently available devices use lower voltages, but he reports friends who have them get good results. At least if you use distilled water there is little danger of getting ionic silver particles. I am planning on getting one fairly soon, as I am about out of silver water. The cost for a good HV generator of the type he recommends is about US $250.00. Silver water is currently used in burn units for topical application. It seems unlikely, given the extent of use, that immunity would develop.

A co-worker of his developed viral pneumonia and was told by his doctor that there was nothing more he could do, that he needed to rest and rely on his immune system. My friend gave him some silver water to use in his nebulizer and over the next two days he coughed up the material that was collecting in his lungs and over the next week recovered. All anctedotal, but... No one will pay for trials of something that cannot be patented.

As the Dutch said while fighting the Spanish: "It is not necessary to have hope in order to persevere."