This 50ml plastic bottle of Robert Oster Signature Plumb Nut fountain pen ink is a deep, muted purple ink. The 50ml bottles are manufactured in Australia of food grade BPA-free PET, completely recyclable and manufactured in a carbon neutral process, something that founder Robert Oster is extremely proud of.
Having trouble deciding between colors? Use our Ink Comparison Tool to quickly and easily view different colors side by side.
Volume - 50ml Bottle Material - Plastic Color Group - Purple