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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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Maroon 1789 - 2ml ink sample by Robert Oster, showcasing a rich burgundy tone with darker pigment pools, labeled THE DESK BANDIT watermark.

Maroon 1789 - 2ml

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$1.70

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Maroon 1789 - 2ml ink sample by Robert Oster, showcasing a rich burgundy tone with darker pigment pools, labeled THE DESK BANDIT watermark.

Maroon 1789 - 2ml

$1.70

More Details →

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

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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.

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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Yellow Sunset - 2ml ink sample showing a yellow-orange abstract blot on white, resembling a watercolor stain, highlighting its vibrant, free-form dye-based nature.

Yellow Sunset - 2ml

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$1.70

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Yellow Sunset - 2ml ink sample showing a yellow-orange abstract blot on white, resembling a watercolor stain, highlighting its vibrant, free-form dye-based nature.

Yellow Sunset - 2ml

$1.70

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Robert Oster Australis Oak - 2ml Ink Sample

Australis Oak - 2ml

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$1.70

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Robert Oster Australis Oak - 2ml Ink Sample

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Australis Oak - 2ml

$1.70

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Robert Oster Astorquiza Rot - 2ml Ink Samples

Astorquiza Rot - 2ml

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$1.70

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Robert Oster Astorquiza Rot - 2ml Ink Samples

Astorquiza Rot - 2ml

$1.70

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Robert Oster Romeo & Juliet - 2ml Ink Sample

Romeo & Juliet - 2ml

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$1.70

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Robert Oster Romeo & Juliet - 2ml Ink Sample

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Romeo & Juliet - 2ml

$1.70

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Robert Oster Burgundy Chocolate Notes - 2ml Ink Sample

Burgundy Chocolate Notes - 2ml

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$1.70

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Robert Oster Burgundy Chocolate Notes - 2ml Ink Sample

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Burgundy Chocolate Notes - 2ml

$1.70

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Forest Green - 2ml ink sample: A deep, forest-green swatch with a dark sheen effect, featuring a THE DESK BANDIT watermark, representing Robert Oster's dye-based ink.

Forest Green - 2ml

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$1.70

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Forest Green - 2ml ink sample: A deep, forest-green swatch with a dark sheen effect, featuring a THE DESK BANDIT watermark, representing Robert Oster's dye-based ink.

Forest Green - 2ml

$1.70

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Sydney Lavender - 50ml: Robert Oster Signature fountain pen ink bottle with a shimmering blue-black ink swatch, inspired by South Australia's unique palette.

Sydney Lavender - 50ml

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$23.00

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Sydney Lavender - 50ml: Robert Oster Signature fountain pen ink bottle with a shimmering blue-black ink swatch, inspired by South Australia's unique palette.

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Sydney Lavender - 50ml

$23.00

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Rubine - 2ml ink sample by Robert Oster, featuring a vivid red pigment blotch on a white background, with a faint THE DESK BANDIT watermark.

Rubine - 2ml

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$1.70

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Rubine - 2ml ink sample by Robert Oster, featuring a vivid red pigment blotch on a white background, with a faint THE DESK BANDIT watermark.

Rubine - 2ml

$1.70

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Oval-shaped deep purple ink swatch on white, branded THE DESK BANDIT, representing Robert Oster's Purple Rock - 2ml dye-based ink sample.

Purple Rock - 2ml

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$1.70

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Oval-shaped deep purple ink swatch on white, branded THE DESK BANDIT, representing Robert Oster's Purple Rock - 2ml dye-based ink sample.

Purple Rock - 2ml

$1.70

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Green Green - 2ml ink sample by Robert Oster on white paper with darker shading, showcasing The Desk Bandit watermark.

Green Green - 2ml

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$1.70

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Green Green - 2ml ink sample by Robert Oster on white paper with darker shading, showcasing The Desk Bandit watermark.

Green Green - 2ml

$1.70

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Swatch of Robert Oster's Copper - 2ml ink, displaying rich shading and pooling effects, with faint THE DESK BANDIT branding on white paper.

Copper - 2ml

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$1.70

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Swatch of Robert Oster's Copper - 2ml ink, displaying rich shading and pooling effects, with faint THE DESK BANDIT branding on white paper.

Copper - 2ml

$1.70

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Bronze - 2ml ink sample: An abstract vertical blot in deep brown/near-black with subtle tonal variations, featuring The Desk Bandit watermark, representing Robert Oster's dye-based ink.

Bronze - 2ml

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$1.70

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Bronze - 2ml ink sample: An abstract vertical blot in deep brown/near-black with subtle tonal variations, featuring The Desk Bandit watermark, representing Robert Oster's dye-based ink.

Bronze - 2ml

$1.70

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Light Green - 2ml

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$1.70

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Light Green - 2ml

$1.70

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Robert Oster Violet Clouds (Shake 'N' Shimmy) - 2ml Ink Sample

Violet Clouds (Shake 'N' Shimmy) - 2ml

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$2.00

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Robert Oster Violet Clouds (Shake 'N' Shimmy) - 2ml Ink Sample

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Violet Clouds (Shake 'N' Shimmy) - 2ml

$2.00

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Spearmint - 2ml ink sample by Robert Oster, showing dark teal-green hue with pooling edges and subtle center shading, from The Desk Bandit's review.

Spearmint - 2ml

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$1.70

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Spearmint - 2ml ink sample by Robert Oster, showing dark teal-green hue with pooling edges and subtle center shading, from The Desk Bandit's review.

Spearmint - 2ml

$1.70

More Details →

Green Olive - 2ml ink swatch on paper, showing warm golden-brown tones with sepia feathering, featuring THE DESK BANDIT watermark, indicating an ink sample.

Green Olive - 2ml

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$1.70

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Green Olive - 2ml ink swatch on paper, showing warm golden-brown tones with sepia feathering, featuring THE DESK BANDIT watermark, indicating an ink sample.

Green Olive - 2ml

$1.70

More Details →

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 →

Robert Oster Choc Pudding - 2ml Ink Sample

Choc Pudding - 2ml

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$1.70

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Robert Oster Choc Pudding - 2ml Ink Sample

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Choc Pudding - 2ml

$1.70

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Grun Schwarz - 2ml ink sample by Robert Oster, featuring a dark hue with burgundy undertones, displayed as a swatch with The Desk Bandit watermark.

Grun Schwarz - 2ml

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$1.70

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Grun Schwarz - 2ml ink sample by Robert Oster, featuring a dark hue with burgundy undertones, displayed as a swatch with The Desk Bandit watermark.

Grun Schwarz - 2ml

$1.70

More Details →

Close-up of a dark brown ink swatch labeled The Desk Bandit, showcasing the Robert Oster Golden Brown - 2ml fountain pen ink sample on white paper.

Golden Brown - 2ml

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$1.70

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Close-up of a dark brown ink swatch labeled The Desk Bandit, showcasing the Robert Oster Golden Brown - 2ml fountain pen ink sample on white paper.

Golden Brown - 2ml

$1.70

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Robert Oster Signature Ink, Sydney Darling Harbour, 50ml bottle with ink color swatch, showcasing sustainable, non-toxic fountain pen ink made in Australia.

Sydney Darling Harbour - 50ml

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$23.00

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Robert Oster Signature Ink, Sydney Darling Harbour, 50ml bottle with ink color swatch, showcasing sustainable, non-toxic fountain pen ink made in Australia.

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Sydney Darling Harbour - 50ml

$23.00

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Sparkling Cranberry (Shake 'N' Shimmy) - 2ml ink sample in a labelled tube, perfect for testing vibrant color and flow before purchase.

Sparkling Cranberry (Shake 'N' Shimmy) - 2ml

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$2.00

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Sparkling Cranberry (Shake 'N' Shimmy) - 2ml ink sample in a labelled tube, perfect for testing vibrant color and flow before purchase.

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Sparkling Cranberry (Shake 'N' Shimmy) - 2ml

$2.00

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Tangerine - 2ml

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$1.70

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Tangerine - 2ml

$1.70

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Robert Oster Terra Australis (Shake 'N' Shimmy) - 2ml Ink Sample

Terra Australis (Shake 'N' Shimmy) - 2ml

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$2.00

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Robert Oster Terra Australis (Shake 'N' Shimmy) - 2ml Ink Sample

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Terra Australis (Shake 'N' Shimmy) - 2ml

$2.00

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Robert Oster Orange Rumble - 2ml Ink Samples

Orange Rumble - 2ml

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$1.70

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Robert Oster Orange Rumble - 2ml Ink Samples

Orange Rumble - 2ml

$1.70

More Details →

Ryde Green - 2ml ink sample by Robert Oster, featuring an abstract green splash on white, with a faint The Desk Bandit watermark at the bottom.

Ryde Green - 2ml

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$1.70

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Ryde Green - 2ml ink sample by Robert Oster, featuring an abstract green splash on white, with a faint The Desk Bandit watermark at the bottom.

Ryde Green - 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 →

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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Robert Oster Morning Shine (Shake 'N' Shimmy) - 2ml Ink Sample

Morning Shine (Shake 'N' Shimmy) - 2ml

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$2.00

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Robert Oster Morning Shine (Shake 'N' Shimmy) - 2ml Ink Sample

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Morning Shine (Shake 'N' Shimmy) - 2ml

$2.00

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Robert Oster Envy (Shake 'N' Shimmy) - 2ml Ink Sample

Envy (Shake 'N' Shimmy) - 2ml

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$2.00

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Robert Oster Envy (Shake 'N' Shimmy) - 2ml Ink Sample

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Envy (Shake 'N' Shimmy) - 2ml

$2.00

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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.

/ 1 / 2

True Blue - 2ml

$1.70

More Details →

Bottle of Robert Oster Signature ink titled Grey Seas - 50ml, features a gold label and deep blue swatch, showcasing its unique Australian-inspired color.

Grey Seas - 50ml

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$23.00

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Bottle of Robert Oster Signature ink titled Grey Seas - 50ml, features a gold label and deep blue swatch, showcasing its unique Australian-inspired color.

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Grey Seas - 50ml

$23.00

More Details →

Robert Oster Muddy Swamp - 2ml Ink Sample

Muddy Swamp - 2ml

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$1.70

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Robert Oster Muddy Swamp - 2ml Ink Sample

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Muddy Swamp - 2ml

$1.70

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Sterling Silver (Shake 'N' Shimmy) - 2ml ink sample with near-black hue, metallic shimmer, and brushed texture, ideal for testing color and flow.

Sterling Silver (Shake 'N' Shimmy) - 2ml

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$2.00

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Sterling Silver (Shake 'N' Shimmy) - 2ml ink sample with near-black hue, metallic shimmer, and brushed texture, ideal for testing color and flow.

/ 1 / 2

Sterling Silver (Shake 'N' Shimmy) - 2ml

$2.00

More Details →

Robert Oster Aussie Liquid Gold (Shake 'N' Shimmy) - 2ml Ink Sample

Aussie Liquid Gold (Shake 'N' Shimmy) - 2ml

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$2.00

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Robert Oster Aussie Liquid Gold (Shake 'N' Shimmy) - 2ml Ink Sample

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Aussie Liquid Gold (Shake 'N' Shimmy) - 2ml

$2.00

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Robert Oster Red Gold (Shake 'N' Shimmy) - 2ml Ink Sample

Red Gold (Shake 'N' Shimmy) - 2ml

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$2.00

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Robert Oster Red Gold (Shake 'N' Shimmy) - 2ml Ink Sample

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Red Gold (Shake 'N' Shimmy) - 2ml

$2.00

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Deep Purple - 2ml ink sample, showing a dark blue-violet swatch with a goldish-brown sheen, reflecting Robert Oster's unique Australian-inspired palette.

Deep Purple - 2ml

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$1.70

X

Deep Purple - 2ml ink sample, showing a dark blue-violet swatch with a goldish-brown sheen, reflecting Robert Oster's unique Australian-inspired palette.

/ 1 / 2

Deep Purple - 2ml

$1.70

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