Improve your Siderotypes with fumed silica pre-treatment

Writer and photography / Giorgio Bordin Fumed Silica treatment can improve details in your Siderotypes, but be careful, it’s not chemistry without risk as Giorgio Bordin tell us. Fumed Silica, as it’s commonly said, (CAS 112945-52-5) is also known as pyrogenic silica because it is produced in a flame. It consists of an extremely fine …