Application process: Wet and soak the solvent nozzle Applicable models: 4-color/5-color/6-color/8-color/9-color/10-color/12-color desktop inkjet printer Product use: Clean the nozzle (print head) of the inkjet printer to make the printing ink smoother, protect the printer nozzle and extend its service life Cleaning steps: 1) Press the ink drop button on the printer to replace the ink cartridge, the trolley will move to the position to replace the ink cartridge, unplug the power cord 2) Open the trolley cover and take out the ink cartridge; 3) Use a syringe to extract an appropriate amount of special cleaning liquid from the cleaning liquid bottle. 4) Place the small rubber tube on the syringe on the ink outlet in the trolley. 5) Pour 12ml of special cleaning liquid into the ink outlet. 6) Repeat the above steps for each ink outlet one by one. 7) After turning off the power, put the ink cartridge back into the trolley and cover the trolley cover. Let the printer stand for 2-3 hours (depending on the blockage of the print head), and keep it powered off. 8) After 2-3 hours, turn on the power again and clean the nozzle. 9) Please clean the ink outlet at least once every 1 to 2 months. Such maintenance can extend the life of the printer. Package includes: 1 * 100ml cleaning liquid