Robert Oster Ink bottle

Blue Martini - Shades pale-to-rich blue hues.

Robert Oster Signature® Fountain Pen Inks are non-toxic and eco-friendly.
The bottle is made from recycled chemical waste that would otherwise remain a hazard to the environment.
PET is the most recycled plastic in the world and much more often recycled than glass bottles.

Note: Some colors may appear differently on different papers.
Shading may vary from pen nib to pen nib.

Go have a look in the 'Specifications' section below at the PDF file to see a few of the available colors and learn more about the bottles and inks manufacturing.