Humidifier and filter that you are using long lasting, hard, Yellow from the actual product. This is included in the bleaching powder or dust in the air shown in the screen filter tap water filtration for you. The filters and the stain on it and keep using humidification capacity while in the lower left. Please see the way you care. Filter will not move, easy to fill the container with water, 食酢 (2 TBS) or citric acid (1 TSP) to the mix, its a dirty filter and lukewarm water. After soaking, please press wash the filter more than 20 minutes (please do not rub is set to the humidifier is possible), drip not shake excess water, wet. Water, hard water and allows you to filter life span will be shorter. Purify water from corner to corner. Sometimes the life of the filters and then in a alphabetical order and longer. Way to replace the filters and the date if you are not even if the filter is soft and the care in the above. Attaches to filter dirt and hard like a stone to be moisture without sucking up the condition. borune-do humidifier filter is the same for all models.