Uma isisindo, umonakalo, ukungangeni kwendawo, kanye\/noma izindleko zokulahla ibhodlela lengilazi lithinteka, ibhodlela elakhiwe nge-polypropylene lingenye indlela yokucatshangelwa. Izinzuzo zezinto zokwakha ze-polypropylene zifaka amanani aphansi okukhipha, ukuhambisana nezincibilikisi eziningi, alungele ukusebenza ngamaprotheni, alungele izinhlelo zokusebenza ze-ion chromatography, elungele ukugcinwa kwesampula ezwela i-pH, futhi asuse isidingo sokufakwa ngesikhathi se-microsampling.