The 0.01%,0.02% and 0.05% hibitane solution and cool boiled water were used as oxygen-wetting solution,and its bacteria-carrying condition was observed.

• 采用浓度为0．01%25、0．02%25、0．05%25洗必泰溶液与凉开水作为氧气湿化液，观察溶液带菌情况。