The Silver Lungs generator I use makes sizes that are amongst the smallest in the industry (as small as 1.9 nm's) and with an average size of 8.4 nm's. We have run multiple lab analysis of our main competitors and clearly show the smallest (confirmed) silver nano-particles by comparison.
It is important to note that the average particle size range (8.4 nanometers) stated for our product is based on particles of pure silver metal (i.e. actual colloidal silver by proper definition) rather than silver oxide particles unwittingly created during TEM (Transmission Electron Microscopy) analysis. Silver oxide is by no means the same thing as pure metallic silver.
Remember that most electrolysis-type silver generators produce almost entirely ionic solutions rather than pure metallic silver particle based solutions. When using the TEM process to analyze an ionic silver solution, the ions will be forced to combine with ambient oxygen when the water is evaporated and will immediately form silver oxide particles of a very small size. At that point, there is a new form of silver created that was not in the original solution to begin with. These newly formed (ultra small) silver oxide particles are incorrectly assumed to be pure metallic particles of silver and are passed off to the un-discerning consumer. Thus, the TEM analysis purported on other sites are invalid as the only thing found in the image are silver ions combined with oxygen.
These newly created silver oxide particles (created as a byproduct of TEM analysis) are found to be roughly .0008 microns in diameter or 0.8 nanometers when using the proper unit of measure rather than measuring in microns. A comparable example of using the wrong unit of measure would be akin to measuring the length of a small parking lot in kilometers rather than meters. This is why silver solutions are referred to as "nano-silver", not "micron-silver." So, when measuring (nano sized) material in microns, this creates confusion to the consumer who does not know the difference between microns and nanometers. 1 micron = 1,000 nanometers.