​Features: 1、Help humidify oxygen, a practical and essential accessory for oxygen generator. 2、Easy to be installed on oxygen generator, convenient to operate and use. 3、Reusable designs, if the oxygen generator is not used for a period of time, please pour out the water in the humidification cup and clean it for use. 4、Large font minimum/highest water marks, convenient for operation. 5、Made of quality plastic material, safe and eco?friendly, firm and durable. 6﹜Easy sealing, translucent designs, suitable for various brands of oxygen generators at home and abroad. Condition: 100% Brand New Item Type: Oxygen Generator Humidification Cup Material: Plastic Size: Approx. 18 x 9.5cm / 7.1 x 3.7in Fitment: Fit for various brands of oxygen generators at home and abroad Fit for Turtle Fit for Konsung Fit for Sysmed Fit for Longfei Fit for Philips Fit for INVACARE Fit for Kaiya Fit for MED﹞JOY Fit for Ya Ao Fit for Folee Fit for MELING Fit for YANGLIDE Fit for O2box Fit for YJT Fit for YRK, etc. Operation Use 1. Be sure to put pure water or cool boiled water, do not use tap water or hot boiling water 2. Place the water in the middle of the two-line English letter scales of the humidification cup (not too much) 3. Replace the water once a day or two days. If you find that there is no oxygen after the water is replaced, please check whether the humidification cup is tight 4. Use a toothpick to clear the holes in the humidified cup tube every two months 5. If the oxygen generator is not used for a period of time, please pour out the water in the humidification cup and clean it for use. Package Included: 1 x Oxygen Generator Humidification Cup