For our mouthpieces we only use first quality silver 999 considered pure silver, with a thickness of 10 microns. For comparison, normally costume jewelry used in rings or chains etc. It is between 1 and 2 microns thick. Our mouthpieces 10 microns.
The silver is deposited electrolytically, on the basis of brass, which is the material we use to manufacture our mouthpieces.
The 999 silver used is very resistant to wear and tear from use and corrosion from saliva.