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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 Fire and Ice - 2ml Ink Samples

Fire and Ice - 2ml

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$1.70

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Robert Oster Fire and Ice - 2ml Ink Samples

Fire and Ice - 2ml

$1.70

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Robert Oster Summer Storm - 2ml ink sample, featuring a deep purple ink blot on a white background with a faint THE DESK BANDIT watermark.

Summer Storm - 2ml

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$1.70

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Robert Oster Summer Storm - 2ml ink sample, featuring a deep purple ink blot on a white background with a faint THE DESK BANDIT watermark.

Summer Storm - 2ml

$1.70

More Details →

Robert Oster Great Southern Ocean - 2ml Ink Samples

Great Southern Ocean - 2ml

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$1.70

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Robert Oster Great Southern Ocean - 2ml Ink Samples

Great Southern Ocean - 2ml

$1.70

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Robert Oster Morning Mist - 2ml Ink Samples

Morning Mist - 2ml

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$1.70

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Robert Oster Morning Mist - 2ml Ink Samples

Morning Mist - 2ml

$1.70

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Thunderstorm - 2ml ink sample by Robert Oster, featuring an abstract teal and brown wash, showcasing organic shapes and shading typical of dye-based inks.

Thunderstorm - 2ml

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$1.70

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Thunderstorm - 2ml ink sample by Robert Oster, featuring an abstract teal and brown wash, showcasing organic shapes and shading typical of dye-based inks.

Thunderstorm - 2ml

$1.70

More Details →

Tranquility - 2ml ink sample by Robert Oster, featuring a vertical teal-green brushstroke with a reddish-maroon sheen, set against a white background with a faint watermark.

Tranquility - 2ml

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$1.70

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Tranquility - 2ml ink sample by Robert Oster, featuring a vertical teal-green brushstroke with a reddish-maroon sheen, set against a white background with a faint watermark.

Tranquility - 2ml

$1.70

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Robert Oster Marine - 2ml Ink Samples

Marine - 2ml

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$1.70

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Robert Oster Marine - 2ml Ink Samples

Marine - 2ml

$1.70

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Soda Pop Blue - 2ml sample by Robert Oster, features a deep blue ink swatch on white, with “The Desk Bandit” watermark visible.

Soda Pop Blue - 2ml

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$1.70

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Soda Pop Blue - 2ml sample by Robert Oster, features a deep blue ink swatch on white, with “The Desk Bandit” watermark visible.

Soda Pop Blue - 2ml

$1.70

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Lake of Fire - 2ml ink sample, dark blue with purplish-red sheen, on white paper bearing THE DESK BANDIT watermark.

Lake of Fire - 2ml

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$1.70

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Lake of Fire - 2ml ink sample, dark blue with purplish-red sheen, on white paper bearing THE DESK BANDIT watermark.

Lake of Fire - 2ml

$1.70

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Deep Sea - 2ml ink sample by Robert Oster, featuring a teal-blue swatch with a burgundy sheen, showcasing its vibrant dye-based color.

Deep Sea - 2ml

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$1.70

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Deep Sea - 2ml ink sample by Robert Oster, featuring a teal-blue swatch with a burgundy sheen, showcasing its vibrant dye-based color.

Deep Sea - 2ml

$1.70

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Abstract blue ink swatch on white paper, showcasing varying saturation for Robert Oster's Torquay - 2ml sample from The Desk Bandit, highlighting dye-based qualities.

Torquay - 2ml

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$1.70

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Abstract blue ink swatch on white paper, showcasing varying saturation for Robert Oster's Torquay - 2ml sample from The Desk Bandit, highlighting dye-based qualities.

Torquay - 2ml

$1.70

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Clearwater Rain - 2ml ink, turquoise-blue swatch on white, showcasing Robert Oster's dye-based pigment in a smooth, abstract wash.

Clearwater Rain - 2ml

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$1.70

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Clearwater Rain - 2ml ink, turquoise-blue swatch on white, showcasing Robert Oster's dye-based pigment in a smooth, abstract wash.

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Clearwater Rain - 2ml

$1.70

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Abstract blue ink swatch labeled The Desk Bandit, showcasing the 2ml sample of Robert Oster's Blue Water Ice dye-based ink.

Blue Water Ice - 2ml

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$1.70

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Abstract blue ink swatch labeled The Desk Bandit, showcasing the 2ml sample of Robert Oster's Blue Water Ice dye-based ink.

Blue Water Ice - 2ml

$1.70

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Australian Sky Blue - 2ml ink sample, showcasing an abstract deep blue wash on white background, illustrating fountain pen ink's rich gradients and organic flow.

Australian Sky Blue - 2ml

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$1.70

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Australian Sky Blue - 2ml ink sample, showcasing an abstract deep blue wash on white background, illustrating fountain pen ink's rich gradients and organic flow.

Australian Sky Blue - 2ml

$1.70

More Details →

Robert Oster Bishop to King - 2ml Ink Sample

Bishop to King - 2ml

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$1.70

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Robert Oster Bishop to King - 2ml Ink Sample

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Bishop to King - 2ml

$1.70

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Robert Oster Blue Black - 2ml Ink Samples

Blue Black - 2ml

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$1.70

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Robert Oster Blue Black - 2ml Ink Samples

Blue Black - 2ml

$1.70

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Blue Denim - 2ml ink sample swatch, showing deep blue with red sheen edges and THE DESK BANDIT watermark on a white background.

Blue Denim - 2ml

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$1.70

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Blue Denim - 2ml ink sample swatch, showing deep blue with red sheen edges and THE DESK BANDIT watermark on a white background.

Blue Denim - 2ml

$1.70

More Details →

Dragon's Night - 2ml ink sample showcases a deep blue abstract wash with uneven saturation and a darker outline, reflecting the unique Australian palette.

Dragon's Night - 2ml

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$1.70

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Dragon's Night - 2ml ink sample showcases a deep blue abstract wash with uneven saturation and a darker outline, reflecting the unique Australian palette.

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Dragon's Night - 2ml

$1.70

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Evening Sapphire - 2ml ink sample, dark blue swab on white background, watermarked The Desk Bandit, showcasing Robert Oster's dye-based ink.

Evening Sapphire - 2ml

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$1.70

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Evening Sapphire - 2ml ink sample, dark blue swab on white background, watermarked The Desk Bandit, showcasing Robert Oster's dye-based ink.

Evening Sapphire - 2ml

$1.70

More Details →

GoGo - 2ml ink sample: a vivid blue blot with metallic sheen, showcasing the Robert Oster ink's vibrant expression for testing color and flow.

GoGo - 2ml

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$1.70

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GoGo - 2ml ink sample: a vivid blue blot with metallic sheen, showcasing the Robert Oster ink's vibrant expression for testing color and flow.

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GoGo - 2ml

$1.70

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Romeo & Juliet - 2ml

Romeo & Juliet - 2ml

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$1.70

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Romeo & Juliet - 2ml

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Romeo & Juliet - 2ml

$1.70

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Robert Oster Bondi Blue - 2ml ink sample swatch on white paper, showcasing a deep blue hue with purplish sheen, from The Desk Bandit.

Bondi Blue - 2ml

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$1.70

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Robert Oster Bondi Blue - 2ml ink sample swatch on white paper, showcasing a deep blue hue with purplish sheen, from The Desk Bandit.

Bondi Blue - 2ml

$1.70

More Details →

Swatch of Robert Oster's Blue Night ink, 2ml sample, displayed as a dark navy watercolor stroke on white, with The Desk Bandit watermark below.

Blue Night - 2ml

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$1.70

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Swatch of Robert Oster's Blue Night ink, 2ml sample, displayed as a dark navy watercolor stroke on white, with The Desk Bandit watermark below.

Blue Night - 2ml

$1.70

More Details →

Robert Oster Taiwan Blue - 2ml Ink Sample

Taiwan Blue - 2ml

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$1.70

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Robert Oster Taiwan Blue - 2ml Ink Sample

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Taiwan Blue - 2ml

$1.70

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True Blue - 2ml ink sample by Robert Oster, featuring a deep blue watercolor swatch with a cloud-like texture and reddish-purple edges, reflecting Australian inspiration.

True Blue - 2ml

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$1.70

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True Blue - 2ml ink sample by Robert Oster, featuring a deep blue watercolor swatch with a cloud-like texture and reddish-purple edges, reflecting Australian inspiration.

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True Blue - 2ml

$1.70

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School Blue - 2ml ink sample by Robert Oster, featuring a deep blue abstract ink-blot with darker edges, showcased on a white background from The Desk Bandit.

School Blue - 2ml

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$1.70

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School Blue - 2ml ink sample by Robert Oster, featuring a deep blue abstract ink-blot with darker edges, showcased on a white background from The Desk Bandit.

School Blue - 2ml

$1.70

More Details →

Midnight Sapphire - 2ml ink sample featuring a dark blue–purple, granulating swatch on a white background, branded faintly with THE DESK BANDIT.

Midnight Sapphire - 2ml

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$1.70

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Midnight Sapphire - 2ml ink sample featuring a dark blue–purple, granulating swatch on a white background, branded faintly with THE DESK BANDIT.

Midnight Sapphire - 2ml

$1.70

More Details →

Blue watercolor swatch representing Robert Oster's Bass Straight ink sample, 2ml, on white background, showcasing its abstract wash style and dye-based composition.

Bass Straight - 2ml

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$1.70

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Blue watercolor swatch representing Robert Oster's Bass Straight ink sample, 2ml, on white background, showcasing its abstract wash style and dye-based composition.

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Bass Straight - 2ml

$1.70

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Carbon Fire - 2ml ink sample, showcasing a dark blue swatch with subtle shading and a reddish sheen, typical of Robert Oster's dye-based inks.

Carbon Fire - 2ml

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$1.70

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Carbon Fire - 2ml ink sample, showcasing a dark blue swatch with subtle shading and a reddish sheen, typical of Robert Oster's dye-based inks.

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Carbon Fire - 2ml

$1.70

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Wind - 2ml

Wind - 2ml

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$1.70

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Wind - 2ml

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Wind - 2ml

$1.70

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Muddy Swamp - 2ml

Muddy Swamp - 2ml

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$1.70

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Muddy Swamp - 2ml

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Muddy Swamp - 2ml

$1.70

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Chicago - 2ml

Chicago - 2ml

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$1.70

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Chicago - 2ml

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Chicago - 2ml

$1.70

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Robert Oster Australian Opal Blue - 2ml Ink Sample

Australian Opal Blue - 2ml

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$1.70

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Robert Oster Australian Opal Blue - 2ml Ink Sample

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Australian Opal Blue - 2ml

$1.70

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Tokyo Blue Denim - 2ml ink sample, deep blue with reddish-brown sheen, on paper. Ideal for testing fountain pen ink color and flow.

Tokyo Blue Denim - 2ml

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$1.70

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Tokyo Blue Denim - 2ml ink sample, deep blue with reddish-brown sheen, on paper. Ideal for testing fountain pen ink color and flow.

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Tokyo Blue Denim - 2ml

$1.70

More Details →

Blue Sea - 2ml ink sample by Robert Oster, showing deep blue with reddish-purple sheen on white paper, featuring The Desk Bandit watermark.

Blue Sea - 2ml

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$1.70

X

Blue Sea - 2ml ink sample by Robert Oster, showing deep blue with reddish-purple sheen on white paper, featuring The Desk Bandit watermark.

Blue Sea - 2ml

$1.70

More Details →

Blue Lagoon - 2ml ink sample, featuring an abstract blot of bright blue with darker purplish gradients, showcasing Robert Oster's dye-based ink. Watermark: THE DESK BANDIT.

Blue Lagoon - 2ml

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$1.70

X

Blue Lagoon - 2ml ink sample, featuring an abstract blot of bright blue with darker purplish gradients, showcasing Robert Oster's dye-based ink. Watermark: THE DESK BANDIT.

Blue Lagoon - 2ml

$1.70

More Details →

Australis Hydra (2ml) - The Desk Bandit

Australis Hydra - 2ml

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$1.70

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Australis Hydra (2ml) - The Desk Bandit

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Australis Hydra - 2ml

$1.70

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Robert Oster Ocean - 2ml Ink Sample

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

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Miami - 2ml

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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Silent Nite (2ml) - The Desk Bandit

Silent Nite - 2ml

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$1.70

X

Silent Nite (2ml) - The Desk Bandit

/ 1 / 2

Silent Nite - 2ml

$1.70

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