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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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Emerald - 2ml ink sample by Robert Oster, showcasing a dark green swatch with subtle shading and sheen, featuring The Desk Bandit watermark.

Emerald - 2ml

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$1.70

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Emerald - 2ml ink sample by Robert Oster, showcasing a dark green swatch with subtle shading and sheen, featuring The Desk Bandit watermark.

Emerald - 2ml

$1.70

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Clay Red - 2ml ink sample swatch, featuring irregular shape with darker edges, on white background. Faint “The Desk Bandit” watermark visible.

Clay Red - 2ml

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$1.70

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Clay Red - 2ml ink sample swatch, featuring irregular shape with darker edges, on white background. Faint “The Desk Bandit” watermark visible.

Clay Red - 2ml

$1.70

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Eucalyptus Leaf - 2ml ink sample, featuring a deep green-black blotch on white, branded with THE DESK BANDIT, ideal for fountain pen enthusiasts.

Eucalyptus Leaf - 2ml

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$1.70

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Eucalyptus Leaf - 2ml ink sample, featuring a deep green-black blotch on white, branded with THE DESK BANDIT, ideal for fountain pen enthusiasts.

Eucalyptus Leaf - 2ml

$1.70

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Australis Tea (2ml) - The Desk Bandit

Australis Tea - 2ml

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$1.70

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Australis Tea (2ml) - The Desk Bandit

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Australis Tea - 2ml

$1.70

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Moss - 2ml ink sample by Robert Oster, featuring a dark olive-green swatch on white, labeled with The Desk Bandit watermark.

Moss - 2ml

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$1.70

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Moss - 2ml ink sample by Robert Oster, featuring a dark olive-green swatch on white, labeled with The Desk Bandit watermark.

Moss - 2ml

$1.70

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Crocodile Green - 2ml ink sample showcases a moss-green watercolor swatch with emerald and teal shading, plus a rusty brown sheen along edges.

Crocodile Green - 2ml

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$1.70

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Crocodile Green - 2ml ink sample showcases a moss-green watercolor swatch with emerald and teal shading, plus a rusty brown sheen along edges.

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Crocodile Green - 2ml

$1.70

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Abstract ink swatch of Robert Oster's Melon Tea - 2ml, showing a brown-black stain with feathering on white, featuring The Desk Bandit watermark.

Melon Tea - 2ml

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$1.70

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Abstract ink swatch of Robert Oster's Melon Tea - 2ml, showing a brown-black stain with feathering on white, featuring The Desk Bandit watermark.

Melon Tea - 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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Robert Oster Chartreuse - 2ml Ink Sample

Chartreuse - 2ml

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$1.70

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Robert Oster Chartreuse - 2ml Ink Sample

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Chartreuse - 2ml

$1.70

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Dusky Pink - 2ml ink sample, showcasing a deep burgundy/maroon watercolor wash with feathered edges and tonal variations, representing Robert Oster's dye-based ink.

Dusky Pink - 2ml

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$1.70

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Dusky Pink - 2ml ink sample, showcasing a deep burgundy/maroon watercolor wash with feathered edges and tonal variations, representing Robert Oster's dye-based ink.

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Dusky Pink - 2ml

$1.70

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Khakhi - 2ml ink sample by Robert Oster on white paper, featuring a mottled wash with THE DESK BANDIT label at the bottom.

Khakhi - 2ml

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$1.70

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Khakhi - 2ml ink sample by Robert Oster on white paper, featuring a mottled wash with THE DESK BANDIT label at the bottom.

Khakhi - 2ml

$1.70

More Details →

Velvet Storm - 2ml, a deep bluish-green ink swatch with burgundy sheen edges, inspired by South Australia's palette, from Robert Oster Signature Inks.

Velvet Storm - 2ml

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$1.70

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Velvet Storm - 2ml, a deep bluish-green ink swatch with burgundy sheen edges, inspired by South Australia's palette, from Robert Oster Signature Inks.

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Velvet Storm - 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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Yellow Sunrise - 2ml ink sample by Robert Oster, featuring an abstract orange-yellow watercolor swatch on a white background with a THE DESK BANDIT watermark.

Yellow Sunrise - 2ml

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$1.70

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Yellow Sunrise - 2ml ink sample by Robert Oster, featuring an abstract orange-yellow watercolor swatch on a white background with a THE DESK BANDIT watermark.

Yellow Sunrise - 2ml

$1.70

More Details →

Aqua - 2ml ink sample by Robert Oster, showcasing a teal center with burgundy edges and shimmer, on a paper with THE DESK BANDIT watermark.

Aqua - 2ml

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$1.70

X

Aqua - 2ml ink sample by Robert Oster, showcasing a teal center with burgundy edges and shimmer, on a paper with THE DESK BANDIT watermark.

Aqua - 2ml

$1.70

More Details →

Smokescreen - 2ml ink sample by Robert Oster, featuring a deep reddish-purple hue with black mottling, displayed as a liquid pigment swatch on white paper.

Smokescreen - 2ml

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$1.70

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Smokescreen - 2ml ink sample by Robert Oster, featuring a deep reddish-purple hue with black mottling, displayed as a liquid pigment swatch on white paper.

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Smokescreen - 2ml

$1.70

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Robert Oster African Gold - 2ml Ink Samples

African Gold - 2ml

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$1.70

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Robert Oster African Gold - 2ml Ink Samples

African Gold - 2ml

$1.70

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Turquoise - 2ml ink sample by Robert Oster, featuring a blue-green watercolor swatch with gradient and feathering on a white background, watermark THE DESK BANDIT visible.

Turquoise - 2ml

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$1.70

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Turquoise - 2ml ink sample by Robert Oster, featuring a blue-green watercolor swatch with gradient and feathering on a white background, watermark THE DESK BANDIT visible.

Turquoise - 2ml

$1.70

More Details →

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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Robert Oster Barossa Grape - 2ml ink sample featuring a richly shaded purple/black blot on white background, showcasing its dye-based texture. Watermarked The Desk Bandit.

Barossa Grape - 2ml

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$1.70

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Robert Oster Barossa Grape - 2ml ink sample featuring a richly shaded purple/black blot on white background, showcasing its dye-based texture. Watermarked The Desk Bandit.

Barossa Grape - 2ml

$1.70

More Details →

Robert Oster Aussie Gold - 2ml Ink Samples

Aussie Gold - 2ml

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$1.70

X

Robert Oster Aussie Gold - 2ml Ink Samples

Aussie Gold - 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

X

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

X

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

/ 1 / 2

Dragon's Night - 2ml

$1.70

More Details →

Robert Oster Aussie Brown - 2ml Ink Samples

Aussie Brown - 2ml

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$1.70

X

Robert Oster Aussie Brown - 2ml Ink Samples

Aussie Brown - 2ml

$1.70

More Details →

Robert Oster Signature Ink bottle, Summer Storm - 50ml, with gold label and dusky purple ink swatch, inspired by South Australia's wine regions.

Summer Storm - 50ml

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$23.00

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Robert Oster Signature Ink bottle, Summer Storm - 50ml, with gold label and dusky purple ink swatch, inspired by South Australia's wine regions.

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Summer Storm - 50ml

$23.00

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Claret - 2ml: A deep purple-black fountain pen ink sample with red/purple sheen, displayed on white paper, featuring the Desk Bandit watermark.

Claret - 2ml

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$1.70

X

Claret - 2ml: A deep purple-black fountain pen ink sample with red/purple sheen, displayed on white paper, featuring the Desk Bandit watermark.

Claret - 2ml

$1.70

More Details →

Robert Oster Signature Ink bottle labeled Viola - 50ml, featuring a pinkish-purple swatch, inspired by South Australia's wine regions.

Viola - 50ml

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$23.00

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Robert Oster Signature Ink bottle labeled Viola - 50ml, featuring a pinkish-purple swatch, inspired by South Australia's wine regions.

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Viola - 50ml

$23.00

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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

X

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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Black Violet - 2ml

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$1.70

X

Black Violet - 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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Verde de Rio - 2ml ink sample by Robert Oster, featuring a bright yellow-green abstract swatch with dark shading, showcasing its unique dye-based color.

Verde de Rio - 2ml

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$1.70

X

Verde de Rio - 2ml ink sample by Robert Oster, featuring a bright yellow-green abstract swatch with dark shading, showcasing its unique dye-based color.

Verde de Rio - 2ml

$1.70

More Details →

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

X

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 →

Earth - 2ml

Earth - 2ml

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$1.70

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Earth - 2ml

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Earth - 2ml

$1.70

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Robert Oster Black is Black - 2ml Ink Sample

Black is Black - 2ml

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$1.70

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Robert Oster Black is Black - 2ml Ink Sample

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Black is Black - 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

X

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

More Details →

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

X

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

More Details →

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

X

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

More Details →

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