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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 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

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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

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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

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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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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.

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True Blue - 2ml

$1.70

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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.

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

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Ink swatch of Purple Jazz - 2ml by Robert Oster, featuring a deep blue-purple hue on white, with The Desk Bandit watermark visible.

Purple Jazz - 2ml

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$1.70

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Ink swatch of Purple Jazz - 2ml by Robert Oster, featuring a deep blue-purple hue on white, with The Desk Bandit watermark visible.

Purple Jazz - 2ml

$1.70

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Charcoal - 2ml ink sample, deep blue-purple swatch with subtle shading, branded THE DESK BANDIT, representing Robert Oster's dye-based fountain-pen ink.

Charcoal - 2ml

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$1.70

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Charcoal - 2ml ink sample, deep blue-purple swatch with subtle shading, branded THE DESK BANDIT, representing Robert Oster's dye-based fountain-pen ink.

Charcoal - 2ml

$1.70

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Sushi - 2ml ink sample: A deep red, watercolor-like swatch with soft edges, showcasing the vibrant hue of Robert Oster's fountain pen ink.

Sushi - 2ml

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$1.70

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Sushi - 2ml ink sample: A deep red, watercolor-like swatch with soft edges, showcasing the vibrant hue of Robert Oster's fountain pen ink.

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Sushi - 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.

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

$2.00

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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

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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.

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Deep Purple - 2ml

$1.70

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Abstract deep red pigment wash resembling a watercolor ink blot, representing Robert Oster's Red Candy - 2ml fountain pen ink sample.

Red Candy - 2ml

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$1.70

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Abstract deep red pigment wash resembling a watercolor ink blot, representing Robert Oster's Red Candy - 2ml fountain pen ink sample.

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Red Candy - 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 →

Swatch of Robert Oster's Crimson - 2ml, showcasing pooling and shading effects on white paper, with The Desk Bandit watermark visible.

Crimson - 2ml

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$1.70

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Swatch of Robert Oster's Crimson - 2ml, showcasing pooling and shading effects on white paper, with The Desk Bandit watermark visible.

Crimson - 2ml

$1.70

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Robert Oster Blood Moon - 2ml Ink Sample

Blood Moon - 2ml

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$1.70

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Robert Oster Blood Moon - 2ml Ink Sample

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Blood Moon - 2ml

$1.70

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Robert Oster Chicago - 2ml Ink Sample

Chicago - 2ml

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$1.70

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Robert Oster Chicago - 2ml Ink Sample

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Chicago - 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

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Abstract wash of bright red-orange watercolor on white background, highlighting Robert Oster's Orange - 2ml ink sample, with faint THE DESK BANDIT watermark at the bottom.

Orange - 2ml

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$1.70

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Abstract wash of bright red-orange watercolor on white background, highlighting Robert Oster's Orange - 2ml ink sample, with faint THE DESK BANDIT watermark at the bottom.

Orange - 2ml

$1.70

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Chocolate - 2ml

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$1.70

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Chocolate - 2ml

$1.70

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Robert Oster Whiskey - 2ml Ink Sample

Whiskey - 2ml

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$1.70

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Robert Oster Whiskey - 2ml Ink Sample

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Whiskey - 2ml

$1.70

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Graphite - 2ml ink sample by Robert Oster, featuring deep, rich strokes with subtle undertones on a white background, ideal for fountain-pen enthusiasts.

Graphite - 2ml

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$1.70

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Graphite - 2ml ink sample by Robert Oster, featuring deep, rich strokes with subtle undertones on a white background, ideal for fountain-pen enthusiasts.

Graphite - 2ml

$1.70

More Details →

Vine Leaf - 2ml sample: Abstract green watercolor swatch represents the vibrant Robert Oster ink, showcasing subtle tonal variations for fountain pen enthusiasts.

Vine Leaf - 2ml

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$1.70

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Vine Leaf - 2ml sample: Abstract green watercolor swatch represents the vibrant Robert Oster ink, showcasing subtle tonal variations for fountain pen enthusiasts.

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Vine Leaf - 2ml

$1.70

More Details →

Robert Oster Signature Ink Velvet Crush (50ml) in a black vial with a gold label, showcasing rich purple ink with a gold-bronze sheen.

Velvet Crush (50ml)

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$23.00

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Robert Oster Signature Ink Velvet Crush (50ml) in a black vial with a gold label, showcasing rich purple ink with a gold-bronze sheen.

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Velvet Crush (50ml)

$23.00

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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

More Details →

Abstract design preview for Robert Oster's Green At Night - 2ml ink sample, featuring an irregular dark form with lighter patches on a white background.

Green At Night - 2ml

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$1.70

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Abstract design preview for Robert Oster's Green At Night - 2ml ink sample, featuring an irregular dark form with lighter patches on a white background.

Green At Night - 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

More Details →

Robert Oster Signature fountain-pen ink bottle, labeled Thunderstorm - 50ml, featuring a gold label and a circular swatch of muted slate-blue color in the corner.

Thunderstorm - 50ml

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$23.00

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Robert Oster Signature fountain-pen ink bottle, labeled Thunderstorm - 50ml, featuring a gold label and a circular swatch of muted slate-blue color in the corner.

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Thunderstorm - 50ml

$23.00

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Robert Oster Signature “Soda Pop Blue” ink, 50ml bottle with gold-foil label, showcases a vibrant blue color in the round inset on the label.

Soda Pop Blue - 50ml

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$23.00

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Robert Oster Signature “Soda Pop Blue” ink, 50ml bottle with gold-foil label, showcases a vibrant blue color in the round inset on the label.

Soda Pop Blue - 50ml

$23.00

More Details →

Robert Oster No Fixed Address (Shake 'N' Shimmy) - 2ml Ink Sample

No Fixed Address (Shake 'N' Shimmy) - 2ml

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$2.00

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Robert Oster No Fixed Address (Shake 'N' Shimmy) - 2ml Ink Sample

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No Fixed Address (Shake 'N' Shimmy) - 2ml

$2.00

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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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Robert Oster “Signature” fountain-pen ink in Clearwater Rain, 50ml bottle, with a gold label, shown with a deep teal/blue-green ink swatch.

Clearwater Rain - 50ml

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$23.00

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Robert Oster “Signature” fountain-pen ink in Clearwater Rain, 50ml bottle, with a gold label, shown with a deep teal/blue-green ink swatch.

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Clearwater Rain - 50ml

$23.00

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Orange Zest - 2ml ink sample by Robert Oster, featuring a bright red-orange brushstroke with varied pigment density on a textured white background.

Orange Zest - 2ml

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$1.70

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Orange Zest - 2ml ink sample by Robert Oster, featuring a bright red-orange brushstroke with varied pigment density on a textured white background.

Sold Out

Orange Zest - 2ml

$1.70

This product is sold out

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Gold Antiqua - 50ml bottle of Robert Oster Signature fountain-pen ink, featuring a rich, warm brown swatch highlighting its unique shading inspired by South Australia.

Gold Antiqua - 50ml

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$23.00

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Gold Antiqua - 50ml bottle of Robert Oster Signature fountain-pen ink, featuring a rich, warm brown swatch highlighting its unique shading inspired by South Australia.

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Sold Out

Gold Antiqua - 50ml

$23.00

This product is sold out

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Terracotta - 2ml ink sample by Robert Oster, showcased as a bright reddish-orange abstract swatch on a white background, featuring The Desk Bandit watermark.

Terracotta - 2ml

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$1.70

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Terracotta - 2ml ink sample by Robert Oster, showcased as a bright reddish-orange abstract swatch on a white background, featuring The Desk Bandit watermark.

Sold Out

Terracotta - 2ml

$1.70

This product is sold out

More Details →

Robert Oster Pink Squirrel - 2ml Ink Sample

Pink Squirrel - 2ml

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$1.70

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Robert Oster Pink Squirrel - 2ml Ink Sample

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Sold Out

Pink Squirrel - 2ml

$1.70

This product is sold out

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