Kuphatikiza pakupanga zakumwa ndi madzi, muyeneranso kupanga zotengera zopakira.Pamadzi, chakumwa, chosavuta kunyamula ndikukwaniritsa zofunikira pakusankha bwino ndi botolo la PET.Kuphatikiza pakupereka mayankho odzaza zakumwa zosiyanasiyana, timaperekanso makina opangira mabotolo a PET amadzi, zakumwa kapena mkaka, komanso mayankho opangira zida zopangira mowa, mafuta kapena mankhwala osiyanasiyana.