Me ka hoʻohana ʻana i ke ʻano hou loa, ʻo ka pH waiwai o ka wai holoi kaʻa he kūʻokoʻa, pale i ka wikiwiki o ka wai holoi kaʻa alkaline ma ka ʻili pena, a me ka hoʻolohi ʻana i ka ʻelemakule o ka ʻili pena, nā kaʻa a me nā ʻāpana ʻē aʻe.ʻO ke kiʻekiʻe kiʻekiʻe o ka holoi kaʻa ma ka mākeke