Less Gooping Blue Ink for Ball Pen is especially formulated for 0.8 and 1.0 mm tips. The Blue Ink combines features like fast starting, very less gooping, excellent smoothness and no static-leakage. The Blue Ink has good wear resistance and offers fair amount of light fastness. Less Gooping Blue Ink for Ball Pen is designed with a pH level of 7.5 ± 0.5.