1.liquid fluorescent marker 2.Easy to wipe off 3.High ... -base without toxic, no h HX Liquid Electronic Fluorescent Board Marker Pen 1.Water-based, dry-wipe prescription. 2. ... color, Best for indication on mirror, plastic board, Light board, or glass under black light (ultra-violet) or fluorescent lamp etc4. Water ... store in horizontally position. HX Liquid Electronic Fluorescent Board Marker Pen