Kangen water ionizers produce the same type of alkaline and acidic water in that their machines contain a filter and ionizing chamber just like all other alkaline water ionizers. The difference is on the ORP (-ORP) value.

Technically, in order to be classified as Kangen Water, it needs to show a negative ORP (-ORP) of about -250mV or lower, while typical Ionized ionized water shows anywhere between +100mV and -100mV, depending on the quality of the machine