Blend and create your own custom colors with this COPIC® ink 12mL Empty Bottle! You can even add metallic alcohol inks into your ink mixture to add special shiny effects! This is an empty COPIC® ink bottle. Its pen-like shape makes it compact and easy fits inside any COPIC® wallet, making it easier to travel with and use your inks on the go. COPIC® Ink 12mL Empty Bottle Includes: - 1 Empty Bottle - 1 Nozzle - 1 Bottle Cap Amount of ink needed for COPIC® Empty Marker: COPIC® Sketch: Approx. 3mL COPIC® Classic: Approx. 4mL COPIC® Wide: Approx. 6mL How to Blend Ink: 1: Pour your choice of ink(s) into the empty bottle. *The bottle is marked per 1mL. 2: Insert the nozzle firmly, straight into the bottle, making sure there are no gaps. *The nozzle should be hard to remove once it is inserted into the bottle. Usage Notes: Always use COPIC® refill ink for this product Only use this product for storing COPIC® refill ink or making custom color ink We cannot guarantee the quality of the product if another ink brand is used to fill it besides COPIC® Ink We cannot guarantee the quality or vibrancy of a custom ink color you mix yourself. *We recommend that you understand some basic color theory before mixing to create your own color; i.e., red + blue = violet/purple, red + yellow = orange, etc. COPIC® ink is a flammable alcohol ink. Always avoid exposure to direct sunlight when working with COPIC® ink and store them in a location safe from fire Use COPIC® Ink in a well-ventilated area, especially if you are using COPIC® ink solely for the reason of making ink paintings Store out of the reach of children Product Specifications: Dimensions: 0.6 x 0.6 x 5.5 inches Item Weight: 0.7 ounces Learn more about COPIC® ink in here