Uma isisindo, ukulimala, ukuqina komhlaba, kanye nezindleko \
noma izindleko zokulahlwa kwe-vial yengilazi kuyathinteka, ukwenziwa kwe-vial kusuka ku-polypropylene kungenye indlela yokucabanga. Izinzuzo zezinto zokwenziwa kwe-polypropylene zifaka amanani aphansi okukhishwa, ukuhambisana nama-sols amaningi, elungele ukusebenza ngamaprotheni, elungele ukugcinwa kwesampula ye-Ion, elungele isidingo sokufakwa ngesikhathi se-MicroScial.