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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African Gold - 50ml Robert Oster ink, in a black glass bottle with a ribbed cap and gold label, shown alongside a warm golden-brown color swatch.
Robert Oster
African Gold - 50ml
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$23.00
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African Gold - 50ml Robert Oster ink, in a black glass bottle with a ribbed cap and gold label, shown alongside a warm golden-brown color swatch.
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African Gold - 50ml

$23.00

Robert Oster

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Robert Oster “Signature” Morning Mist - 50ml fountain-pen ink bottle with a gold label, displayed with a bright turquoise/teal swatch, dye-based and inspired by South Australia.
Robert Oster
Morning Mist - 50ml
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$23.00
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Robert Oster “Signature” Morning Mist - 50ml fountain-pen ink bottle with a gold label, displayed with a bright turquoise/teal swatch, dye-based and inspired by South Australia.

Morning Mist - 50ml

$23.00

Robert Oster

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Aussie Gold - 50ml fountain pen ink by Robert Oster, displayed with its black bottle featuring a gold label and a circular yellow-gold ink swatch.
Robert Oster
Aussie Gold - 50ml
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$23.00
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Aussie Gold - 50ml fountain pen ink by Robert Oster, displayed with its black bottle featuring a gold label and a circular yellow-gold ink swatch.
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Aussie Gold - 50ml

$23.00

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Swatch of Robert Oster's Burgundy ink in 2ml, showing deep red hues with darker pooled areas and irregular edges on white paper.
Robert Oster
Burgundy - 2ml
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$1.70
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Swatch of Robert Oster's Burgundy ink in 2ml, showing deep red hues with darker pooled areas and irregular edges on white paper.

Burgundy - 2ml

$1.70

Robert Oster

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Muddy Grass - 2ml
Robert Oster
Muddy Grass - 2ml
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$1.70
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Muddy Grass - 2ml
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Muddy Grass - 2ml

$1.70

Robert Oster

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Muddy Wine - 2ml
Robert Oster
Muddy Wine - 2ml
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$1.70
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Muddy Wine - 2ml
/ 1 / 2

Muddy Wine - 2ml

$1.70

Robert Oster

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Robert Oster Citrus - 2ml Ink Sample
Robert Oster
Citrus - 2ml
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$1.70
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Robert Oster Citrus - 2ml Ink Sample
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Citrus - 2ml

$1.70

Robert Oster

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Robert Oster Australis Hydra - 2ml Ink Sample
Robert Oster
Australis Hydra - 2ml
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$1.70
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Robert Oster Australis Hydra - 2ml Ink Sample
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Australis Hydra - 2ml

$1.70

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Blood Crimson - 2ml fountain pen ink sample, showcasing a deep red, irregular swatch with tonal variations, perfect for testing color and flow.
Robert Oster
Blood Crimson - 2ml
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$1.70
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Blood Crimson - 2ml fountain pen ink sample, showcasing a deep red, irregular swatch with tonal variations, perfect for testing color and flow.
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Blood Crimson - 2ml

$1.70

Robert Oster

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Swatch of Robert Oster's Whisper Red ink, 2ml sample, displaying varied tone intensity on a white background, highlighting its dye-based pigment characteristics.
Robert Oster
Whisper Red - 2ml
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$1.70
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Swatch of Robert Oster's Whisper Red ink, 2ml sample, displaying varied tone intensity on a white background, highlighting its dye-based pigment characteristics.
/ 1 / 2

Whisper Red - 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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Robert Oster Dark Chocolate - 2ml Ink Sample
Robert Oster
Dark Chocolate - 2ml
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$1.70
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Robert Oster Dark Chocolate - 2ml Ink Sample
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Dark Chocolate - 2ml

$1.70

Robert Oster

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Robert Oster Ocean - 2ml Ink Sample
Robert Oster
Ocean - 2ml
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$1.70
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Robert Oster Ocean - 2ml Ink Sample
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Ocean - 2ml

$1.70

Robert Oster

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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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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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new Robert Oster Signature Ink - Sinner's Blood, 50ml, deep burgundy fountain pen ink with rich texture, highlighting sustainable Australian craftsmanship and exceptional writing performance.
Robert Oster
Sinner's Blood - 2ml
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$1.70
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Robert Oster Signature Ink - Sinner's Blood, 50ml, deep burgundy fountain pen ink with rich texture, highlighting sustainable Australian craftsmanship and exceptional writing performance.
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Sinner's Blood - 2ml

$1.70

Robert Oster

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Sepia Nights - 2ml
Robert Oster
Sepia Nights - 2ml
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$1.70
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Sepia Nights - 2ml
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Sepia Nights - 2ml

$1.70

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Brandy - 2ml
Robert Oster
Brandy - 2ml
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$1.70
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Brandy - 2ml
/ 1 / 2

Brandy - 2ml

$1.70

Robert Oster

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Muddy Bucket - 2ml
Robert Oster
Muddy Bucket - 2ml
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$1.70
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Muddy Bucket - 2ml
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Muddy Bucket - 2ml

$1.70

Robert Oster

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Miami - 2ml
Robert Oster
Miami - 2ml
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$1.70
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Miami - 2ml
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Miami - 2ml

$1.70

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Robert Oster Silent Nite - 2ml Ink Sample
Robert Oster
Silent Nite - 2ml
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$1.70
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Robert Oster Silent Nite - 2ml Ink Sample
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Silent Nite - 2ml

$1.70

Robert Oster

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

$23.00

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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Frankly Blue - 2ml ink sample, showcasing dark-blue swatch with watery edges on white paper, featuring THE DESK BANDIT watermark at the bottom.
Robert Oster
Frankly Blue - 2ml
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$1.70
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Frankly Blue - 2ml ink sample, showcasing dark-blue swatch with watery edges on white paper, featuring THE DESK BANDIT watermark at the bottom.

Frankly Blue - 2ml

$1.70

Robert Oster

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Napa - 2ml
Robert Oster
Napa - 2ml
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$1.70
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Napa - 2ml
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Napa - 2ml

$1.70

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 Ink - Australian Opal Blue, 50ml bottle, shown with a blue ink swatch, emphasizing sustainable, vibrant performance for fountain pen use.
Robert Oster
Australian Opal Blue - 50ml
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$23.00
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Robert Oster Signature Ink - Australian Opal Blue, 50ml bottle, shown with a blue ink swatch, emphasizing sustainable, vibrant performance for fountain pen use.
/ 1 / 2

Australian Opal Blue - 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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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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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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Ten Dollar Gold - 2ml
Robert Oster
Ten Dollar Gold - 2ml
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$1.70
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Ten Dollar Gold - 2ml
/ 1 / 2

Ten Dollar Gold - 2ml

$1.70

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Robert Oster Black is Black (50ml) Bottled Ink
Robert Oster
Black is Black (50ml)
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$23.00
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Robert Oster Black is Black (50ml) Bottled Ink
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Black is Black (50ml)

$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. Sold Out
Robert Oster
Peach - 50ml
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$23.00
X
Peach - 50ml Robert Oster Signature fountain-pen ink bottle with a bright, warm orange swatch circle, inspired by South Australia's wine regions.
/ 1 / 2
Sold Out

Peach - 50ml

$23.00

Robert Oster

This product is sold out

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