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Robert Oster

Explore our collection of Robert Oster Signature Inks – made in Australia and described as well-behaved fountain pen inks. Each ink is produced in a just-in-time manner to meet demand and is bottled in recyclable PET plastic. Robert Oster inks are non-toxic and eco-friendly, crafted with care for both writing performance and environmental impact.

Looking for the full range or more? Browse all bottled fountain pen inks or shop ink samples to try before you commit.

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Robert Oster Signature Ink Flaming Blue - 50ml bottle, featuring a gold label and black cap, with a swatch showcasing the deep, rich blue ink color.

Flaming Blue - 50ml

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$23.00

$18.40

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Robert Oster Signature Ink Flaming Blue - 50ml bottle, featuring a gold label and black cap, with a swatch showcasing the deep, rich blue ink color.

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Sale

Flaming Blue - 50ml

$23.00 $18.40

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Blue Lagoon - 50ml Robert Oster ink in a sleek black-and-gold bottle, shown with a vibrant blue swatch, inspired by South Australia's palette.

Blue Lagoon - 50ml

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$23.00

$18.40

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Blue Lagoon - 50ml Robert Oster ink in a sleek black-and-gold bottle, shown with a vibrant blue swatch, inspired by South Australia's palette.

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Sale

Blue Lagoon - 50ml

$23.00 $18.40

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Blue Denim - 50ml bottle of Robert Oster Signature fountain-pen ink, featuring a black bottle with a gold label and a deep blue ink swatch with reddish sheen.

Blue Denim - 50ml

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$23.00

$18.40

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Blue Denim - 50ml bottle of Robert Oster Signature fountain-pen ink, featuring a black bottle with a gold label and a deep blue ink swatch with reddish sheen.

Sale

Blue Denim - 50ml

$23.00 $18.40

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Robert Oster Tokyo Blue Denim - 50ml Bottled Ink

Tokyo Blue Denim - 50ml

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$23.00

$18.40

X

Robert Oster Tokyo Blue Denim - 50ml Bottled Ink

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Tokyo Blue Denim - 50ml

$23.00 $18.40

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Robert Oster Torquay 50ml ink bottle, featuring a black ribbed cap and gold-foil label, shown with a bright turquoise circular swatch.

Torquay - 50ml

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$23.00

$18.40

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Robert Oster Torquay 50ml ink bottle, featuring a black ribbed cap and gold-foil label, shown with a bright turquoise circular swatch.

/ 1 / 2

Sale

Torquay - 50ml

$23.00 $18.40

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Robert Oster Signature Turquoise fountain-pen ink, 50ml bottle with black cap and gold label, shown with a circular swatch of its vibrant color.

Turquoise - 50ml

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$23.00

$18.40

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Robert Oster Signature Turquoise fountain-pen ink, 50ml bottle with black cap and gold label, shown with a circular swatch of its vibrant color.

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Turquoise - 50ml

$23.00 $18.40

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Robert Oster Kids On The Block - 2ml Ink Sample

Kids On The Block - 2ml

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$1.70

$1.36

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Robert Oster Kids On The Block - 2ml Ink Sample

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Sale

Kids On The Block - 2ml

$1.70 $1.36

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Robert Oster Signature Blue Night ink, 50ml, in a dark capped bottle with a gold label, shown with a deep blue ink swatch.

Blue Night - 50ml

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$23.00

$18.40

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Robert Oster Signature Blue Night ink, 50ml, in a dark capped bottle with a gold label, shown with a deep blue ink swatch.

/ 1 / 2

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Blue Night - 50ml

$23.00 $18.40

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Robert Oster Silent Nite (Holiday 2020) - 50ml Bottled Ink

Silent Nite (Holiday 2020) - 50ml

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$23.00

$18.40

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Robert Oster Silent Nite (Holiday 2020) - 50ml Bottled Ink

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Silent Nite (Holiday 2020) - 50ml

$23.00 $18.40

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Robert Oster NYC USA - 50ml Bottled Ink

NYC USA - 50ml

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$23.00

$18.40

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Robert Oster NYC USA - 50ml Bottled Ink

/ 1 / 2

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NYC USA - 50ml

$23.00 $18.40

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Robert Oster Muddy Swamp - 50ml Bottled Ink

Muddy Swamp - 50ml

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$23.00

$18.40

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Robert Oster Muddy Swamp - 50ml Bottled Ink

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Muddy Swamp - 50ml

$23.00 $18.40

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Midnight Sapphire - 50ml fountain-pen ink by Robert Oster, featuring a gold-labeled black bottle with a round swatch of deep blue-purple color.

Midnight Sapphire - 50ml

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$23.00

$18.40

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Midnight Sapphire - 50ml fountain-pen ink by Robert Oster, featuring a gold-labeled black bottle with a round swatch of deep blue-purple color.

/ 1 / 2

Sale

Midnight Sapphire - 50ml

$23.00 $18.40

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Robert Oster Signature Ink - Steely Days, 50ml bottle, featuring a blue-green/teal swatch, ideal for vibrant, smooth writing with excellent shading.

Steely Days - 50ml

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$23.00

$18.40

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Robert Oster Signature Ink - Steely Days, 50ml bottle, featuring a blue-green/teal swatch, ideal for vibrant, smooth writing with excellent shading.

/ 1 / 2

Sale

Steely Days - 50ml

$23.00 $18.40

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Robert Oster Ten Dollar Blue - 50ml Bottled Ink

Ten Dollar Blue - 50ml

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$23.00

$18.40

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Robert Oster Ten Dollar Blue - 50ml Bottled Ink

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Ten Dollar Blue - 50ml

$23.00 $18.40

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Robert Oster Blue Martini - 50ml Bottled Ink

Blue Martini - 50ml

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$23.00

$18.40

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Robert Oster Blue Martini - 50ml Bottled Ink

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Blue Martini - 50ml

$23.00 $18.40

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Robert Oster Muddy Water - 50ml Bottled Ink

Muddy Water - 50ml

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$23.00

$18.40

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Robert Oster Muddy Water - 50ml Bottled Ink

/ 1 / 2

Sale

Muddy Water - 50ml

$23.00 $18.40

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Robert Oster Chicago - 50ml Bottled Ink

Chicago - 50ml

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$23.00

$18.40

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Robert Oster Chicago - 50ml Bottled Ink

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Chicago - 50ml

$23.00 $18.40

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Robert Oster Miami - 50ml Bottled Ink

Miami - 50ml

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$23.00

$18.40

X

Robert Oster Miami - 50ml Bottled Ink

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Miami - 50ml

$23.00 $18.40

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Robert Oster Signature Wind fountain pen ink, 50ml bottle with gold label, featuring a medium-blue swatch. Sustainable, non-toxic, and handmade in Australia.

Wind - 50ml

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$23.00

$18.40

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Robert Oster Signature Wind fountain pen ink, 50ml bottle with gold label, featuring a medium-blue swatch. Sustainable, non-toxic, and handmade in Australia.

/ 1 / 2

Sold Out

Wind - 50ml

$23.00 $18.40

This product is sold out

More Details →

Robert Oster Kids On The Block - 50ml Bottled Ink

Kids On The Block - 50ml

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$23.00

$18.40

X

Robert Oster Kids On The Block - 50ml Bottled Ink

/ 1 / 2

Sold Out

Kids On The Block - 50ml

$23.00 $18.40

This product is sold out

More Details →

Robert Oster Ocean - 50ml Bottled Ink

Ocean - 50ml

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$23.00

$18.40

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Robert Oster Ocean - 50ml Bottled Ink

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Sold Out

Ocean - 50ml

$23.00 $18.40

This product is sold out

More Details →

Frankly Blue - 50ml Robert Oster Signature fountain-pen ink with deep blue color and red-purple sheen, inspired by South Australia's wine regions.

Frankly Blue - 50ml

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$23.00

$18.40

X

Frankly Blue - 50ml Robert Oster Signature fountain-pen ink with deep blue color and red-purple sheen, inspired by South Australia's wine regions.

Sold Out

Frankly Blue - 50ml

$23.00 $18.40

This product is sold out

More Details →

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