Flange ultraosnic kwarara mita ne daya irin tattalin arziki ruwa kwarara mita wanda yafi auna daban-daban na tsaftataccen ruwa, kamar: tsaftataccen ruwa, ruwan teku, ruwan sha, kogin, barasa da dai sauransu.
Kuma shiya dace da ci gaba da auna kwarara da zafi na ruwa mai tsabta da daidaituwa ba tare da babban taro dakatar da barbashi ko gas masana'antu yanayi.
Daidaito fi ±1.0%
Babban dogaro, babban aiki, farashi mai rahusa
Ma'aunin kwararar hanya biyu
Babu sassan motsi, ba sawa, ba rashin matsi, ba tare da kulawa ba
Auna ruwan ɗabi'a da ruwa mara inganci
Nuna kwararar kai tsaye, Jimlar kwarara, zafi, kwararar mai kyau, kwarara mara kyau
Sassan bututu masu inganci, an shigar da na'urar firikwensin kafin barin masana'anta don tabbatar da ingancin ma'auni mai girma