Ọdịmma dị elu - a na-eji polypropylene inert dị elu, nke na-eguzogide acid, na-eguzogide corrosion na-adịgide adịgide, oghere 40 - oghere ule ọ bụla nwere oghere 40 nwere otu dayameta, nke nwere ike gboo mkpa gị ma nwee arụmọrụ dị mma - Ọkachamara n'ichepụta, ọmarịcha nka, mara mma na nke bara uru, enwere ike iji ya ogologo oge na-eji kemịkalụ na-eji maka ihe nlele.