Ukusetshenziswa kwamabhodlela esampula e-TOC: Indlela ye-USP engu-643, ukuhlolwa kwamanzi ebangeni lezemithi, amanzi omjovo (WFI), amanzi ahlanzekile (HPW), ukuhlolwa kokuqinisekisa ukuhlanza\/isampula, ukuhlola ukusebenza kahle ngaphambi nangemva kokuhlanza, kanye “nomkhuba omuhle wokukhiqiza” (GMP ) Ukulandeleka okufanelekile, ukulinganisa kwe-TOC, ukuqinisekiswa nokufaneleka kwesistimu, ukugcinwa kokulinganisa.