PROCEDURES ON HOW TO USE THIS: 1. Look at the bottom of the cartridge and decide if you have a long printhead slot or a short one. (Long one for black and Short for tri-color) 2. Put a correct silicone pad on the clip 3. Put the cartridge on top of the silicone pad. Align the cartridge in the middle of the clip. Now, push the cartridge down and forward until you hear a click. It would be best if you used a downward and forward push. Some customers report that they cannot do this because the clip is "too small." The clip is not too small and is the correct size to gurantee a tight seal. 4. Use a syringe, and draw 1-2 ml of ink from the bottom. If you feel there is no vacuum, wiggle the cartridge a little to adjust the cartridge's position on the silicone pad. 5. Remove the cartridge, clean the bottom of it, and install it in the printer. Repeat if necessary. Tips: for older dried cartridges, you can fill a bowl with 1/2 inch of distilled water, heat the water with a microwave until boiling, put the cartridge in hot water until it cools to room temperature, and then do the priming. Important Note: For stubborn clogs, we recommend BCH cleaning solutions.