Compatible brands: HP 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 printers Product use: Clean the inkjet printer nozzle (print head) to make the printing ink smoother and protect the printer nozzle to extend its service life. Specific application: This product can remove most of the nozzle blockages and print line breakage caused by various reasons; simple operation, easy to use, no damage to the nozzle, only a few minutes. Cleaning fluid has several advantages: 1. No corrosion to the nozzle, protect the life of your printing nozzle 2. The effect is obvious, no matter how stubborn the crystals are, they can be dissolved and removed by soaking in our company's cleaning fluid 3. Low cost and cheap price 4. Imported raw materials plus our company's professional technology 5. Someone will teach you how to use the cleaning fluid correctly to achieve better results Cleaning steps: 1) Press the ink drop button on the printer to change the ink cartridge, the trolley will move to the position to change the ink cartridge, unplug the power cord 2) Open the trolley cover and take out the ink cartridge; 3) Use a syringe to extract some special cleaning liquid from the cleaning liquid bottle. 4) Place the small rubber hose 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) When the power is off, put the ink cartridge back into the trolley and cover the trolley cover. Leave the printer for 2-3 hours (depending on the blockage of the print head), and pay attention to keep the power off. 8) After 2-3 hours, turn on the power again and perform the nozzle cleaning operation. 9) Please clean the ink outlet at least once every 1 to 2 months. Such maintenance can extend the service life of the printer. Package contains: 1 * 100ml cleaning liquid 1 * syringe Thank you for your attention, there are many useful and cheap goods in our store. We will reply to you as soon as possible. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.