The series commemorates J. Herbin's 350th anniversary and their dedication to producing the finest ink. The Ink Perle Noire comes in an attractive glass bottle with thoughtfully designed to evoke the company’s rich history. Specially designed to evoke company’s rich history; Uses all-natural dyes in its formulation. Inks are pH neutral, non-toxic, lightfast and water based. Ink flows smoothly, fast drying, and easy to clean out, making it ideal for beginners. Perfect for fountain pen users, calligraphers.