Ink na-adịghị emebi emebi, nke enwere ike iji ahịhịa, mkpịsị akara, ịgba ma ọ bụ itinye mkpịsị aka ndị ntuli aka n'ime karama, nwere nitrate ọlaọcha.Ikike ya imebi mkpịsị aka ahụ ruo oge zuru oke - n'ozuzu karịa awa 12 - dabere na ntinye nke nitrate ọlaọcha, otu esi etinye ya na ogologo oge ọ dị n'akpụkpọ ahụ na ntu mkpịsị aka tupu ihichapụ oke ink.Ọdịnaya nke nitrate ọlaọcha nwere ike ịbụ 5%, 7%, 10%, 14%, 15%, 20%, 25%.
A na-etinye mkpịsị nrịbama na-adịghị ehichapụ anya na mkpịsị aka ọkpọ (na-emekarị) ndị ntuli aka n'oge ntuli aka iji gbochie aghụghọ ntuli aka dịka ịtụ vootu ugboro abụọ.Ọ bụ usoro dị irè maka mba ebe akwụkwọ njirimara maka ụmụ amaala anaghị ahazi ma ọ bụ guzobe ya mgbe niile.