Avoid shaking the pen vigorously, as this might cause the ink to clog or separate. In case you see the ink is starting to become a lot less successful, you might have to switch the pen. UV light techniques tend to be more complex than regular UV lights, However they https://howcaniuseuvlighttospotfa77664.blogoxo.com/39233019/the-best-side-of-hong-kong-100-dollar