COLORVERSE ink, from South Korea, is made of globally recognized premium quality plant-based colorants. It is highly pure with vivid and clear colors, exceptional solubility and great to use in premium fountain pens. The ink writes smoothly in various kinds of pens and dries quickly on paper. COLORVERSE is created by a group of makers with years of knowhow. The ink is treated for hydration and antibacterial property so the ink does not dry or deteriorate easily in a pen. It is also designed to maintain the optimal pH 7-8 (neutral).