Guaranteed Purity For Colloidal Silver

All of our silver comes Guaranteed for purity. While there are many uses for high-purity fine silver, the one product that is of utmost importance for purity is Colloidal Silver. All of our silver is backed by our GSS 4N+ Guarantee of 99.99% purity, or better.  Golden State Silver's available testing procedures include Fischerscope® X-ray fluorescence (XRF) spectrometry, ICP-OES and fire assay, atomic absorption, potentiometric titration, gravimetric analysis, and Glow Discharge Mass Spectrometry (GDMS; which has proven to be one of the most advanced testing procedures for trace amounts of impurities).