CYH25 oxygen tester, ye kɔc kony bï oxygen gas ya tɔ̈ɔ̈u në ɣän kɔ̈k yiic, ɣän kɔ̈k yiic, ɣän kɔ̈k yiic, ɣän kɔ̈k yiic, ɣän kɔ̈k yiic. Na oxygen dɔ̈ɔ̈