Purple Ink for Ball Pen provides poor light fastness and good wear resistance. The Purple Ink has a specific gravity of 1.11± 0.05. The Purple Ink that comes under C-Series and HT- 760 version has a pH level of 7.0 ± 0.5and is suitable for photocopy. Purple Ink for Ball Pen has a surface tension of 35-40 D/cm².
