Application Process: Wet and soak the nozzles with solvent. Applicable Models: 4-color/5-color/6-color/8-color/9-color/10-color/12-color desktop inkjet printer. Product Use: Clean the inkjet printer nozzle (print head) to make printing ink smoother and protect the printer nozzle to extend its lifespan. Specific Application: This product can eliminate most nozzle clogs and print disconnections caused by various reasons; it is simple to use, easy to operate, and does not damage the nozzleit only takes a few minutes! Net Contents: 100ml. Cleaning Steps: (Procedures) 1) Press the ink drop button to change the ink cartridge on the printer. The carriage will move to the position where the ink cartridge is replaced, and the power cord will be disconnected. 2) Open the car cover and remove the ink cartridge. 3) Use a syringe to draw a small amount of the special cleaning fluid from the cleaning fluid bottle. 4) Place the small rubber tube on the syringe over the ink outlet in the printhead carriage. (See the figure below for details.) 5) Pour 12 ml of the special cleaning fluid into the ink outlet. 6) Repeat the above steps for each ink outlet, one by one. 7) With the power off, replace the ink cartridge in the printhead carriage and close the carriage cover. Leave the printer for 23 hours (depending on the printhead clogging) and ensure the printer remains off. 8) After 23 hours, turn the printer back on and perform the nozzle cleaning operation. 9) Please clean the ink outlet at least once every 12 months. Such maintenance can prolong the printer's lifespan. The package includes: 1 * cleaning fluid, 1 * needle tube