Ostrich Ink is a subsidiary of Tianjin Ink Factory in China and has been in production since 1935. The Solar Term Chromatography series is a collection of 24 inks with various colours, shading, and sheening properties, all of which are suited for fountain pens, dip pens, and other writing materials.
3mL ink samples contained in a plastic vial with an o-ring to ensure a proper seal.
