This article proposes modifying the Somogyi-Nelson method for determining reducing sugars. considering that sodium arsenate (one of its constituents) is a toxic substance which is tending to disappear from the market. The chemical principles used in the Somogyi-Nelson method for determining reducing sugars are explained. taking those protocols proposed by Hawk et al (1954). https://parisnaturalfoodes.shop/product-category/sea-vegetables-pure-gold/