PPM of colloidal silver needs to be understood in its entirety. PPM means parts per million. By definition 1 PPM is 1 milligram of silver deposited in 1 liter of water (1,000 ml). If one were to ingest that 1 mg. piece of silver, it would not do you much good. If you were to divide that 1 mg. into 1,000,000 particles of silver, it would then have much more efficacy because it takes one particle of silver to disable 1 pathogen.
The silver is now 1,000,000 times better than 1 piece of silver even though by definition it is still only 1 PPM. If one were to further divide the 1 mg piece of silver into 100,000,000 particles, it would be very beneficial indeed.
We offer our colloidal silver in different strengths as there are endless uses for it and peoples different needs can be met more easily. For example a lot of people take a maintenance dose of colloidal silver mineral solution every day and don’t need a higher strength where as some people use it for skin conditions and would like to address them quickly. Other people use it for their pets like horses, cats, dogs, birds etc These of course are just a few examples and you must select the strength that you feel is right for your intended usage.