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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Frankly Scarlet - 2ml ink sample, displaying a deep burgundy-red wash with subtle variations, highlighting Robert Oster's dye-based pigment on paper.
Robert Oster
Frankly Scarlet - 2ml
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$1.70
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Frankly Scarlet - 2ml ink sample, displaying a deep burgundy-red wash with subtle variations, highlighting Robert Oster's dye-based pigment on paper.
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Frankly Scarlet - 2ml

$1.70

Robert Oster

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Blue Water Ice - 50ml: Robert Oster “Signature” fountain-pen ink in a sleek black bottle with gold-foil label, featuring a vibrant blue ink swatch.
Robert Oster
Blue Water Ice - 50ml
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$23.00
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Blue Water Ice - 50ml: Robert Oster “Signature” fountain-pen ink in a sleek black bottle with gold-foil label, featuring a vibrant blue ink swatch.

Blue Water Ice - 50ml

$23.00

Robert Oster

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Abstract green watercolor resembling Robert Oster's Green Lime ink sample, with soft edges and tonal variations. 2ml dye-based ink, perfect for vibrant writing.
Robert Oster
Green Lime - 2ml
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$1.70
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Abstract green watercolor resembling Robert Oster's Green Lime ink sample, with soft edges and tonal variations. 2ml dye-based ink, perfect for vibrant writing.

Green Lime - 2ml

$1.70

Robert Oster

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Robert Oster's Royal Red - 2ml ink sample swatch on white paper, showcasing its rich pigment and shading with The Desk Bandit watermark faintly visible.
Robert Oster
Royal Red - 2ml
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$1.70
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Robert Oster's Royal Red - 2ml ink sample swatch on white paper, showcasing its rich pigment and shading with The Desk Bandit watermark faintly visible.

Royal Red - 2ml

$1.70

Robert Oster

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Red Orange - 2ml ink sample, featuring an abstract red-orange splash on white. The Desk Bandit watermark subtly appears at the bottom.
Robert Oster
Red Orange - 2ml
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$1.70
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Red Orange - 2ml ink sample, featuring an abstract red-orange splash on white. The Desk Bandit watermark subtly appears at the bottom.

Red Orange - 2ml

$1.70

Robert Oster

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Ever Green - 2ml ink sample, deep green with dark sheen, displayed as an abstract swatch on paper, from The Desk Bandit's fountain-pen ink collection.
Robert Oster
Ever Green - 2ml
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$1.70
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Ever Green - 2ml ink sample, deep green with dark sheen, displayed as an abstract swatch on paper, from The Desk Bandit's fountain-pen ink collection.

Ever Green - 2ml

$1.70

Robert Oster

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GoGo - 50ml Robert Oster Signature ink bottle, vibrant blue with metallic sheen, eco-friendly, crafted in Australia for smooth fountain pen writing.
Robert Oster
GoGo - 50ml
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$23.00
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GoGo - 50ml Robert Oster Signature ink bottle, vibrant blue with metallic sheen, eco-friendly, crafted in Australia for smooth fountain pen writing.
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GoGo - 50ml

$23.00

Robert Oster

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Robert Oster Bishop to King - 50ml Bottled Ink
Robert Oster
Bishop to King - 50ml
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$23.00
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Robert Oster Bishop to King - 50ml Bottled Ink
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Bishop to King - 50ml

$23.00

Robert Oster

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Robert Oster Khakhi - 50ml ink bottle with black cap and gold seal, featuring a grayish base swatch with warm gold sheen.
Robert Oster
Khakhi - 50ml
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$23.00
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Robert Oster Khakhi - 50ml ink bottle with black cap and gold seal, featuring a grayish base swatch with warm gold sheen.
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Khakhi - 50ml

$23.00

Robert Oster

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Robert Oster “Signature” fountain-pen ink, Great Southern Ocean - 50ml, in a black glass bottle with gold label, ribbed cap, and blue-gray ink swatch.
Robert Oster
Great Southern Ocean - 50ml
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$23.00
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Robert Oster “Signature” fountain-pen ink, Great Southern Ocean - 50ml, in a black glass bottle with gold label, ribbed cap, and blue-gray ink swatch.
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Great Southern Ocean - 50ml

$23.00

Robert Oster

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Robert Oster Signature Ink - Plumb Nut 50ml: Cylindrical black bottle with a gold label, showcasing a unique dusty rose ink swatch in the upper right corner.
Robert Oster
Plumb Nut - 50ml
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$23.00
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Robert Oster Signature Ink - Plumb Nut 50ml: Cylindrical black bottle with a gold label, showcasing a unique dusty rose ink swatch in the upper right corner.
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Plumb Nut - 50ml

$23.00

Robert Oster

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Robert Oster Signature fountain-pen ink in Motor Oil, 50ml bottle, features a swatch displaying its unique shade inspired by South Australian wine regions.
Robert Oster
Motor Oil - 50ml
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$23.00
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Robert Oster Signature fountain-pen ink in Motor Oil, 50ml bottle, features a swatch displaying its unique shade inspired by South Australian wine regions.

Motor Oil - 50ml

$23.00

Robert Oster

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Robert Oster Lake of Fire ink, 50ml bottle, features a gold label and deep blue hue with a subtle red sheen, inspired by South Australia.
Robert Oster
Lake of Fire - 50ml
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$23.00
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Robert Oster Lake of Fire ink, 50ml bottle, features a gold label and deep blue hue with a subtle red sheen, inspired by South Australia.
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Lake of Fire - 50ml

$23.00

Robert Oster

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Robert Oster Bondi Blue fountain-pen ink, 50ml bottle, features a gold-foil label. Includes a vibrant blue ink swatch with darker sheen hints.
Robert Oster
Bondi Blue - 50ml
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$23.00
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Robert Oster Bondi Blue fountain-pen ink, 50ml bottle, features a gold-foil label. Includes a vibrant blue ink swatch with darker sheen hints.
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Bondi Blue - 50ml

$23.00

Robert Oster

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Smokescreen - 50ml bottle of Robert Oster Signature dye-based ink, featuring a circular swatch of its unique color, inspired by South Australia's wine regions.
Robert Oster
Smokescreen - 50ml
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$23.00
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Smokescreen - 50ml bottle of Robert Oster Signature dye-based ink, featuring a circular swatch of its unique color, inspired by South Australia's wine regions.

Smokescreen - 50ml

$23.00

Robert Oster

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Bottle of Robert Oster Signature Ink, Taiwan Blue - 50ml, with a teal swatch displaying a pinky-red sheen, emphasizing vibrant, sustainable, and smooth-writing qualities.
Robert Oster
Taiwan Blue - 50ml
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$23.00
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Bottle of Robert Oster Signature Ink, Taiwan Blue - 50ml, with a teal swatch displaying a pinky-red sheen, emphasizing vibrant, sustainable, and smooth-writing qualities.
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Taiwan Blue - 50ml

$23.00

Robert Oster

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Burned Orange - 50ml Robert Oster Signature fountain-pen ink bottle beside a swatch of its coppery-brown hue, inspired by South Australia's natural palette.
Robert Oster
Burned Orange - 50ml
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$23.00
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Burned Orange - 50ml Robert Oster Signature fountain-pen ink bottle beside a swatch of its coppery-brown hue, inspired by South Australia's natural palette.
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Burned Orange - 50ml

$23.00

Robert Oster

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Robert Oster Signature ink bottle labeled Signature with a swatch of deep purple color, 50ml size, inspired by South Australia's palette.
Robert Oster
Deep Purple - 50ml
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$23.00
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Robert Oster Signature ink bottle labeled Signature with a swatch of deep purple color, 50ml size, inspired by South Australia's palette.
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Deep Purple - 50ml

$23.00

Robert Oster

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Bottle of Robert Oster Signature fountain-pen ink, Eucalyptus Leaf - 50ml, with a dark green/black ink swatch in the upper right corner.
Robert Oster
Eucalyptus Leaf - 50ml
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$23.00
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Bottle of Robert Oster Signature fountain-pen ink, Eucalyptus Leaf - 50ml, with a dark green/black ink swatch in the upper right corner.
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Eucalyptus Leaf - 50ml

$23.00

Robert Oster

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Robert Oster Signature Ink Sublime - 50ml black-glass bottle with gold label, shown with a circular swatch of bright grassy green ink.
Robert Oster
Sublime - 50ml
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$23.00
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Robert Oster Signature Ink Sublime - 50ml black-glass bottle with gold label, shown with a circular swatch of bright grassy green ink.
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Sublime - 50ml

$23.00

Robert Oster

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Bottle of Robert Oster Signature Ink, Black Violet - 50ml, featuring a dark violet/blue hue inset, inspired by South Australia's wine regions.
Robert Oster
Black Violet - 50ml
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$23.00
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Bottle of Robert Oster Signature Ink, Black Violet - 50ml, featuring a dark violet/blue hue inset, inspired by South Australia's wine regions.
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Black Violet - 50ml

$23.00

Robert Oster

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Barossa Grape - 50ml Robert Oster Signature ink bottle with gold-foil label, showcasing its distinctive dark purple sheen in the upper right.
Robert Oster
Barossa Grape - 50ml
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$23.00
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Barossa Grape - 50ml Robert Oster Signature ink bottle with gold-foil label, showcasing its distinctive dark purple sheen in the upper right.

Barossa Grape - 50ml

$23.00

Robert Oster

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Australis Oak - 50ml - The Desk Bandit
Robert Oster
Australis Oak - 50ml
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$23.00
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Australis Oak - 50ml - The Desk Bandit
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Australis Oak - 50ml

$23.00

Robert Oster

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Robert Oster Flaming Blue - 2ml Ink Sample
Robert Oster
Flaming Blue - 2ml
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$1.70
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Robert Oster Flaming Blue - 2ml Ink Sample
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Flaming Blue - 2ml

$1.70

Robert Oster

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Robert Oster Yellow Sunrise - 50ml Bottled Ink
Robert Oster
Yellow Sunrise - 50ml
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$23.00
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Robert Oster Yellow Sunrise - 50ml Bottled Ink
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Yellow Sunrise - 50ml

$23.00

Robert Oster

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Hot Pink - 50ml Robert Oster Signature fountain pen ink bottle with a circular swatch, showcasing a vibrant shade inspired by South Australia's palette.
Robert Oster
Hot Pink - 50ml
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$23.00
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Hot Pink - 50ml Robert Oster Signature fountain pen ink bottle with a circular swatch, showcasing a vibrant shade inspired by South Australia's palette.
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Hot Pink - 50ml

$23.00

Robert Oster

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Robert Oster Signature ink bottle, Carbon Fire - 50ml, featuring a dark blue shade swatch in the corner, inspired by South Australian wine regions.
Robert Oster
Carbon Fire - 50ml
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$23.00
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Robert Oster Signature ink bottle, Carbon Fire - 50ml, featuring a dark blue shade swatch in the corner, inspired by South Australian wine regions.
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Carbon Fire - 50ml

$23.00

Robert Oster

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Robert Oster Signature ink bottle labeled Avocado - 50ml with a gold label, featuring a swatch of the ink color on the black plastic bottle.
Robert Oster
Avocado - 50ml
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$23.00
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Robert Oster Signature ink bottle labeled Avocado - 50ml with a gold label, featuring a swatch of the ink color on the black plastic bottle.
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Avocado - 50ml

$23.00

Robert Oster

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Robert Oster Signature Ink Marine - 50ml bottle with gold label, black cap, and visible teal swatch showcasing the unique dye-based ink.
Robert Oster
Marine - 50ml
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$23.00
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Robert Oster Signature Ink Marine - 50ml bottle with gold label, black cap, and visible teal swatch showcasing the unique dye-based ink.

Marine - 50ml

$23.00

Robert Oster

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Robert Oster Signature Fountain Pen Ink in Fire Engine Red, 50ml bottle, features a gold label and a bright red ink swatch.
Robert Oster
Fire Engine Red - 50ml
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$23.00
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Robert Oster Signature Fountain Pen Ink in Fire Engine Red, 50ml bottle, features a gold label and a bright red ink swatch.

Fire Engine Red - 50ml

$23.00

Robert Oster

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Robert Oster Signature fountain pen ink bottle, Australian Sky Blue - 50ml, with a bright blue ink swatch, featuring a gold label.
Robert Oster
Australian Sky Blue - 50ml
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$23.00
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Robert Oster Signature fountain pen ink bottle, Australian Sky Blue - 50ml, with a bright blue ink swatch, featuring a gold label.
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Australian Sky Blue - 50ml

$23.00

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Romeo & Juliet - 50ml
Robert Oster
Romeo & Juliet - 50ml
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$23.00
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Romeo & Juliet - 50ml
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Romeo & Juliet - 50ml

$23.00

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Burgundy Chocolate Notes - 50ml
Robert Oster
Burgundy Chocolate Notes - 50ml
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$23.00
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Burgundy Chocolate Notes - 50ml
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Burgundy Chocolate Notes - 50ml

$23.00

Robert Oster

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Australis Tea - 50ml - The Desk Bandit
Robert Oster
Australis Tea - 50ml
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$23.00
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Australis Tea - 50ml - The Desk Bandit
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Australis Tea - 50ml

$23.00

Robert Oster

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Robert Oster Australian Opal Grey - 50ml Bottled Ink
Robert Oster
Australian Opal Grey - 50ml
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$23.00
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Robert Oster Australian Opal Grey - 50ml Bottled Ink
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Australian Opal Grey - 50ml

$23.00

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Robert Oster Melon Tea - 50ml Bottled Ink
Robert Oster
Melon Tea - 50ml
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$23.00
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Robert Oster Melon Tea - 50ml Bottled Ink
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Melon Tea - 50ml

$23.00

Robert Oster

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Bottle of Robert Oster Signature “True Blue” fountain-pen ink, 50ml, with gold-foil label, shown next to a deep blue color swatch with red sheen.
Robert Oster
True Blue - 50ml
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$23.00
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Bottle of Robert Oster Signature “True Blue” fountain-pen ink, 50ml, with gold-foil label, shown next to a deep blue color swatch with red sheen.
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True Blue - 50ml

$23.00

Robert Oster

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Robert Oster Signature fountain-pen ink, Direct Sun - 50ml, with a swatch showcasing its rich red hue, inspired by South Australia's wine regions.
Robert Oster
Direct Sun - 50ml
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$23.00
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Robert Oster Signature fountain-pen ink, Direct Sun - 50ml, with a swatch showcasing its rich red hue, inspired by South Australia's wine regions.

Direct Sun - 50ml

$23.00

Robert Oster

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Astorquiza Rot - 50ml bottle of Robert Oster Signature fountain-pen ink, featuring a reddish-brown swatch beside the sleek black glass container.
Robert Oster
Astorquiza Rot - 50ml
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$23.00
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Astorquiza Rot - 50ml bottle of Robert Oster Signature fountain-pen ink, featuring a reddish-brown swatch beside the sleek black glass container.

Astorquiza Rot - 50ml

$23.00

Robert Oster

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Peach - 50ml Robert Oster Signature fountain-pen ink bottle with a bright, warm orange swatch circle, inspired by South Australia's wine regions. Sold Out
Robert Oster
Peach - 50ml
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$23.00
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Peach - 50ml Robert Oster Signature fountain-pen ink bottle with a bright, warm orange swatch circle, inspired by South Australia's wine regions.
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Sold Out

Peach - 50ml

$23.00

Robert Oster

This product is sold out

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