Re: colloidal silver 5,000-10,000 ppm?
Your assumption is right if you are only using Collodial Silver for minor issues. 20 ppm is usually strong enough. Though they can't say that it works on cancer or on things such as the Ebola virus or other sever viruses, I believe it will.
In order for it to be effect on these severe type of viruses and cancers; a stronger ppm is required to kill them. Usually 5000 ppm is strong enough to kill cancer and these types of viruses.
With the world the way it is presently, a terrorist attach using a viral strain that mutates and can not be synthesized fast enough before it kills, having a strong ppm of
Colloidal Silver on hand just in case, would be a smart decision, and I feel necessary.
The 500 ppm is very useful to strengthen your immune system and to help you fight minor viruses such as warts and the common cold and flues.
Taking a stronger ppm of Collodial Silver will not hurt you if you follow the required daily amount and taking it for only the amount of time specified for whatever you are taking it for, usually no more than 2 weeks. The amount taken daily is determined by your body weight.
A lot of people buy the 5000 even 10,000 ppm and dilute it down with distilled water to the 500 ppm or less and it is a lot cheaper than buying the weaker ppms. You get more for you money that way and you still have a strong ppm on hand just in case.