50ml Signature Inks

Robert Oster Red Orange is a warm, medium red-orange fountain pen ink with medium shading. It dries in 30 seconds in a medium nib on Rhodia and has...

Robert Oster Orange Zest is a bright red-orange fountain pen ink with medium shading and low orange sheen. It dries in 45 seconds in a medium nib o...

Robert Oster Green Olive is a deep yellow fountain pen ink with medium shading. It dries in 40 seconds in a medium nib on Rhodia and has an average...

Robert Oster Frankly Blue is a medium blue fountain pen ink with a slight green undertone, medium shading, and medium sheen. It dries in 30 second...

Robert Oster Evening Sapphire is a medium dusky blue fountain pen ink with medium shading and a pop of pink sheen in large swabs. It dries in 30 se...

Robert Oster Copper is a muted purple-red fountain pen ink with medium shading and black sheen in large swabs. It dries in 30 seconds in a medium n...

Robert Oster Blue Denim is a medium blue fountain pen ink with a green undertone, medium shading, and medium pink sheen. It dries in 30 seconds in ...

Robert Oster Australian Opal Blue is a pale, spring blue fountain pen ink with low shading. It dries in 20 seconds in a medium nib on Rhodia and ha...

Robert Oster Aqua is a beautiful blue-teal fountain pen ink with high shading and medium pink sheen. It dries in 30 seconds in a medium nib on Rhod...

Robert Oster Gummy Shark is a pretty, grey fountain pen ink with medium shading. It dries in 30 seconds in a medium nib on Rhodia and has an averag...

The Robert Oster Signature Ink NYC.USA takes it to the blue skies of new york city with dark blue shading!

The Robert Oster Signature Ink Muddy Bucket colour is based on a yellow bucket covered in muddy sand.

Robert Oster Yellow Sunrise is a bright sunny yellow fountain pen ink with medium shading. It dries in 30 seconds in a medium nib on Rhodia and has...

Robert Oster Vine Leaf is a bright spring green fountain pen ink with medium shading. It dries in 20 seconds in a medium nib on Rhodia and has an a...

Robert Oster Sushi is a medium warm-tone pink fountain pen ink with low shading. It dries in 15 seconds in a medium nib on Rhodia and has an averag...

Robert Oster Plumb Nut is a dusky pink fountain pen ink with low shading. It dries in 30 seconds in a medium nib on Rhodia and has an average flow....

Robert Oster Pinky is a light pink fountain pen ink with medium shading. It dries in 25 seconds in a medium nib on Rhodia and has an average flow. ...

Robert Oster Green Diamond is a medium bright green fountain pen ink with medium shading and medium pink sheen. It dries in 25 seconds in a medium ...

Robert Oster Forest Green is a medium earthy green fountain pen ink with medium shading. It dries in 40 seconds in a medium nib on Rhodia and has a...

Robert Oster Dark Chocolate is a dark purple-brown fountain pen ink with medium shading and low copper sheen. It dries in 30 seconds in a medium ni...

Robert Oster Steely Days is a light blue fountain pen ink, medium shading, and medium pink sheen. It dries in 30 seconds in a medium nib on Rhodia ...

Robert Oster - Kids On The Block This is a blue first released in UK for a school kids event organized by Bernardo Gomes of Fountain Pen UK Facebo...

Robert Oster Whisper Red from the 1980’s collection is a dusky pastel red fountain pen ink with medium shading. It dries in 40 seconds in a medium ...

Robert Oster Terracotta is a medium orange fountain pen ink with medium shading. It dries in 30 seconds in a medium nib on Rhodia and has an averag...