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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 Muddy Swamp - 2ml Ink Sample

Muddy Swamp - 2ml

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$1.70

$1.36

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Robert Oster Muddy Swamp - 2ml Ink Sample

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Muddy Swamp - 2ml

$1.70 $1.36

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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

$1.60

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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 $1.60

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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

$1.60

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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 $1.60

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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

$1.60

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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 $1.60

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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

$1.36

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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 $1.36

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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

$1.36

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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 $1.36

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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

$1.36

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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.

Sale

School Blue - 2ml

$1.70 $1.36

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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

$1.36

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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.

Sale

Purple Jazz - 2ml

$1.70 $1.36

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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

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$1.70

$1.36

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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.

Sale

Midnight Sapphire - 2ml

$1.70 $1.36

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Robert Oster Chicago - 2ml Ink Sample

Chicago - 2ml

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$1.70

$1.36

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Robert Oster Chicago - 2ml Ink Sample

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Chicago - 2ml

$1.70 $1.36

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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

$1.36

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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 $1.36

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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

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$1.70

$1.36

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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.

Sale

Crimson - 2ml

$1.70 $1.36

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Chocolate - 2ml

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$1.70

$1.36

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Chocolate - 2ml

$1.70 $1.36

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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

$1.36

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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.

Sale

Charcoal - 2ml

$1.70 $1.36

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Robert Oster Blood Moon - 2ml Ink Sample

Blood Moon - 2ml

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$1.70

$1.36

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Robert Oster Blood Moon - 2ml Ink Sample

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Blood Moon - 2ml

$1.70 $1.36

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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

$1.36

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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.

Sale

Graphite - 2ml

$1.70 $1.36

More Details →

Robert Oster Whiskey - 2ml Ink Sample

Whiskey - 2ml

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$1.70

$1.36

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Robert Oster Whiskey - 2ml Ink Sample

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Whiskey - 2ml

$1.70 $1.36

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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.

Vine Leaf - 2ml

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$1.70

$1.36

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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.

/ 1 / 2

Sale

Vine Leaf - 2ml

$1.70 $1.36

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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

$1.36

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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.

/ 1 / 2

Sale

Carbon Fire - 2ml

$1.70 $1.36

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Robert Oster Pink Squirrel - 2ml Ink Sample

Pink Squirrel - 2ml

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$1.70

$1.36

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Robert Oster Pink Squirrel - 2ml Ink Sample

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Pink Squirrel - 2ml

$1.70 $1.36

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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.

Bass Straight - 2ml

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$1.70

$1.36

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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.

/ 1 / 2

Sale

Bass Straight - 2ml

$1.70 $1.36

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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

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$1.70

$1.36

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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.

Sale

Green At Night - 2ml

$1.70 $1.36

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

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

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$2.00

$1.60

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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 $1.60

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Robert Oster Australian Opal Blue - 2ml Ink Sample

Australian Opal Blue - 2ml

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$1.70

$1.36

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Robert Oster Australian Opal Blue - 2ml Ink Sample

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Australian Opal Blue - 2ml

$1.70 $1.36

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2ml sample of Robert Oster's Lemon Grass ink, featuring a dark olive-green swatch with textured, irregular edges on a white background, watermarked The Desk Bandit.

Lemon Grass - 2ml

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$1.70

$1.36

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2ml sample of Robert Oster's Lemon Grass ink, featuring a dark olive-green swatch with textured, irregular edges on a white background, watermarked The Desk Bandit.

Sale

Lemon Grass - 2ml

$1.70 $1.36

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Pinky - 2ml

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$1.70

$1.36

X

Sale

Pinky - 2ml

$1.70 $1.36

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

Tinseltown (Shake 'N' Shimmy) - 2ml

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$2.00

$1.60

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

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Tinseltown (Shake 'N' Shimmy) - 2ml

$2.00 $1.60

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Robert Oster Mystic Storm - 2ml Ink Sample

Mystic Storm - 2ml

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$1.70

$1.36

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Robert Oster Mystic Storm - 2ml Ink Sample

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Mystic Storm - 2ml

$1.70 $1.36

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Marrone Mustard - 2ml ink sample, dark brown blot on white, featuring The Desk Bandit watermark, representing Robert Oster's dye-based ink.

Marrone Mustard - 2ml

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$1.70

$1.36

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Marrone Mustard - 2ml ink sample, dark brown blot on white, featuring The Desk Bandit watermark, representing Robert Oster's dye-based ink.

Sale

Marrone Mustard - 2ml

$1.70 $1.36

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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

$1.36

X

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

Sale

Blue Sea - 2ml

$1.70 $1.36

More Details →

Robert Oster Muddy Sand - 2ml Ink Sample

Muddy Sand - 2ml

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$1.70

$1.36

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Robert Oster Muddy Sand - 2ml Ink Sample

/ 1 / 2

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Muddy Sand - 2ml

$1.70 $1.36

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Robert Oster Muddy Crown - 2ml Ink Sample

Muddy Crown - 2ml

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$1.70

$1.36

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Robert Oster Muddy Crown - 2ml Ink Sample

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Muddy Crown - 2ml

$1.70 $1.36

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Lipstick Red - 2ml

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$1.70

$1.36

X

Sale

Lipstick Red - 2ml

$1.70 $1.36

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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

$1.36

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.

Sale

Blue Lagoon - 2ml

$1.70 $1.36

More Details →

Robert Oster Jewel in the Crown (Shake 'N' Shimmy) - 2ml Ink Sample

Jewel in the Crown (Shake 'N' Shimmy) - 2ml

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$2.00

$1.60

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Robert Oster Jewel in the Crown (Shake 'N' Shimmy) - 2ml Ink Sample

/ 1 / 2

Sale

Jewel in the Crown (Shake 'N' Shimmy) - 2ml

$2.00 $1.60

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Robert Oster Muddy Grass - 2ml Ink Sample

Muddy Grass - 2ml

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$1.70

$1.36

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Robert Oster Muddy Grass - 2ml Ink Sample

/ 1 / 2

Sale

Muddy Grass - 2ml

$1.70 $1.36

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Robert Oster Citrus - 2ml Ink Sample

Citrus - 2ml

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$1.70

$1.36

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Robert Oster Citrus - 2ml Ink Sample

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Citrus - 2ml

$1.70 $1.36

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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

$1.36

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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.

/ 1 / 2

Sold Out

Sushi - 2ml

$1.70 $1.36

This product is sold out

More Details →

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

$1.36

X

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 $1.36

This product is sold out

More Details →

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

$1.36

X

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.

Sold Out

Orange - 2ml

$1.70 $1.36

This product is sold out

More Details →

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