I-Aijiren COD Test Tube yenziwe ngengilazi ye-borosilicate, enganciphisa izinguquko ze-pH kanye nokungcola okungase kudonswe engilazini ye-soda lime. Ishubhu yokuhlola ukugaya ingilazi ingasetshenziselwa ukuhlaziya emazingeni okushisa angaphezu kuka-130 degrees Celsius. Ikhiqizwa endaweni yokugcinwa kwaselabhorethri ngezinhloso ezehlukene futhi ingabamba cishe noma yini. I-COD Test Tube incane ngosayizi futhi ilula ngesisindo. Ingahlolwa ngaphandle kwanoma iyiphi enye impahla yaselabhorethri kanye nochwepheshe; kuthatha imizuzu engu-3-5 kuphela ukuhlola isampula, ngaphandle kwezinto ezengeziwe noma amathuluzi futhi kulula ukuyisebenzisa. Lawa mashubhu okuhlola aqinisekisiwe nge-SGC. Lawa mashubhu angasetshenziswa kanye kuphela, ngakho awakwazi ukuphinda asetshenziswe. Ngokuhlolwa kweshubhu ye-Aijiren COD, umsebenzisi ngamunye angakwazi ukuthola kalula amanzi azwela kakhulu futhi anembile.