Gupakira Amazi ya KRYSTAL yerekana ishingiro ryimyambarire nubuzima bwiza mumacupa. Kugaragaza alkaline pH ifite agaciro ka 8 kugeza 8.8 hamwe nubutare budasanzwe, amazi ya KRYSTAL aje mumashusho agereranya icupa rya prism icupa risa na kirisiti yaka cyane, kandi ntiribangamira ubuziranenge nubuziranenge. Ikirangantego cya KRYSTAL kigaragara neza mu icupa, gishimangira gukoraho uburambe bwiza. Usibye ingaruka zigaragara zicupa, amacupa ya kare ya PET hamwe nuducupa twikirahure birashobora gukoreshwa, bigahindura umwanya wapakira nibikoresho, bityo bikagabanya ikirenge cya karuboni muri rusange.