The residual monomer content of polyacrylamide is a critical data to measure whether it is suitable for the food industry. Polyacrylamide polymers are non-toxic which have been widely used in the international water purification, food industry, and sugar industry. However, in the industrial polyacrylamide, it is inevitable that there are trace amounts of unpolymerized acrylamide monomer, which has some toxicity.  Therefore, it is necessary to strictly control the residual monomer content in polyacrylamide products. International requirements for drinking water and food industry in the polyacrylamide in the residual monomer content are less than 500ppm.  The anionic degree of polyacrylamide has a great effect on its use, but its suitable value depends on the kind and nature of the material being treated, and there will be different optimum values in different cases. SINOFLOC polyacrylamide (medium charge, high MW) used in the sugar industry can be used for different materi...