Ubuchwepheshe be-Coulometric Karl Fischer busetshenziswa ukukala ngokunemba umswakama omkhulu oqukethwe isampula elinganisiwe. Lobu buchwepheshe busetshenziswa kabanzi ngenxa yokunemba kanye nezindleko eziphansi zokuhlola. Imodeli i-GDW-106 ikala ngokunemba umswakama omkhulu kumasampula aketshezi, aqinile, kanye negesi ngokwalobu buchwepheshe. Isetshenziswa kagesi, uphethiloli, amakhemikhali, ukudla, nokunye.
Leli thuluzi lisebenzisa amayunithi okucubungula anamandla esizukulwane esisha kanye nesekethe yangaphandle entsha, futhi ukusetshenziswa kwamandla aphansi okuhle kukwenza ukuthi likwazi ukusebenzisa ibhetri encane yokugcina futhi liphatheke kalula. Ukunquma ukuphela kwe-electrolysis kusekelwe ekuhloleni isignali ye-electrode, futhi ukuzinza nokunemba yizinto ezibalulekile zokunemba kokunquma.