An international customer recently made us aware of a potential counterfeit version of Serim’s Residual Peroxide Test in China. This FAKE version (pictured below) is NOT manufactured by Serim Research and should be immediately discarded. Please contact us at customerservice@serim.com if you have any questions or for an authorized distributor in your country. Please see our website for the authentic Serim product – https://serim.com/product/2/Peroxide.

China product