The present study focused on the design and preparation of acid-responsive benzimidazole-chitosan quaternary ammonium salt (BIMIXHAC) nanogels for a controlled. slow-release of Doxorubicin HCl (DOX. HCl). The BIMIXHAC was crosslinked with sodium tripolyphosphate (TPP) using the ion crosslinking method. https://poolsproductscanadas.shop/product-category/ultramax-parts/