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's Royal Red - 2ml ink sample swatch on white paper, showcasing its rich pigment and shading with The Desk Bandit watermark faintly visible.
Robert Oster
Royal Red - 2ml
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$1.70
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Robert Oster's Royal Red - 2ml ink sample swatch on white paper, showcasing its rich pigment and shading with The Desk Bandit watermark faintly visible.

Royal Red - 2ml

$1.70

Robert Oster

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Red Orange - 2ml ink sample, featuring an abstract red-orange splash on white. The Desk Bandit watermark subtly appears at the bottom.
Robert Oster
Red Orange - 2ml
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$1.70
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Red Orange - 2ml ink sample, featuring an abstract red-orange splash on white. The Desk Bandit watermark subtly appears at the bottom.

Red Orange - 2ml

$1.70

Robert Oster

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Ever Green - 2ml ink sample, deep green with dark sheen, displayed as an abstract swatch on paper, from The Desk Bandit's fountain-pen ink collection.
Robert Oster
Ever Green - 2ml
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$1.70
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Ever Green - 2ml ink sample, deep green with dark sheen, displayed as an abstract swatch on paper, from The Desk Bandit's fountain-pen ink collection.

Ever Green - 2ml

$1.70

Robert Oster

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Sepia Nights - 2ml
Robert Oster
Sepia Nights - 2ml
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$1.70
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Sepia Nights - 2ml
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Sepia Nights - 2ml

$1.70

Robert Oster

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Fizzy Lime (Shake 'N' Shimmy) - 2ml sample of Robert Oster fountain pen ink, featuring an abstract green swatch with silvery highlights on a white background.
Robert Oster
Fizzy Lime (Shake 'N' Shimmy) - 2ml
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$2.00
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Fizzy Lime (Shake 'N' Shimmy) - 2ml sample of Robert Oster fountain pen ink, featuring an abstract green swatch with silvery highlights on a white background.
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Fizzy Lime (Shake 'N' Shimmy) - 2ml

$2.00

Robert Oster

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GoGo - 50ml Robert Oster Signature ink bottle, vibrant blue with metallic sheen, eco-friendly, crafted in Australia for smooth fountain pen writing.
Robert Oster
GoGo - 50ml
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$23.00
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GoGo - 50ml Robert Oster Signature ink bottle, vibrant blue with metallic sheen, eco-friendly, crafted in Australia for smooth fountain pen writing.
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GoGo - 50ml

$23.00

Robert Oster

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Robert Oster Bishop to King - 50ml Bottled Ink
Robert Oster
Bishop to King - 50ml
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$23.00
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Robert Oster Bishop to King - 50ml Bottled Ink
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Bishop to King - 50ml

$23.00

Robert Oster

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Robert Oster Khakhi - 50ml ink bottle with black cap and gold seal, featuring a grayish base swatch with warm gold sheen.
Robert Oster
Khakhi - 50ml
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$23.00
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Robert Oster Khakhi - 50ml ink bottle with black cap and gold seal, featuring a grayish base swatch with warm gold sheen.
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Khakhi - 50ml

$23.00

Robert Oster

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Robert Oster “Signature” fountain-pen ink, Great Southern Ocean - 50ml, in a black glass bottle with gold label, ribbed cap, and blue-gray ink swatch.
Robert Oster
Great Southern Ocean - 50ml
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$23.00
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Robert Oster “Signature” fountain-pen ink, Great Southern Ocean - 50ml, in a black glass bottle with gold label, ribbed cap, and blue-gray ink swatch.
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Great Southern Ocean - 50ml

$23.00

Robert Oster

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The Grinch (Shake 'N' Shimmy) - 2ml
Robert Oster
The Grinch (Shake 'N' Shimmy) - 2ml
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$2.00
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The Grinch (Shake 'N' Shimmy) - 2ml
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The Grinch (Shake 'N' Shimmy) - 2ml

$2.00

Robert Oster

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Robert Oster Signature Ink - Plumb Nut 50ml: Cylindrical black bottle with a gold label, showcasing a unique dusty rose ink swatch in the upper right corner.
Robert Oster
Plumb Nut - 50ml
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$23.00
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Robert Oster Signature Ink - Plumb Nut 50ml: Cylindrical black bottle with a gold label, showcasing a unique dusty rose ink swatch in the upper right corner.
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Plumb Nut - 50ml

$23.00

Robert Oster

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Robert Oster Signature Ink - Australian Opal Blue, 50ml bottle, shown with a blue ink swatch, emphasizing sustainable, vibrant performance for fountain pen use.
Robert Oster
Australian Opal Blue - 50ml
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$23.00
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Robert Oster Signature Ink - Australian Opal Blue, 50ml bottle, shown with a blue ink swatch, emphasizing sustainable, vibrant performance for fountain pen use.
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Australian Opal Blue - 50ml

$23.00

Robert Oster

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Robert Oster Signature fountain-pen ink in Motor Oil, 50ml bottle, features a swatch displaying its unique shade inspired by South Australian wine regions.
Robert Oster
Motor Oil - 50ml
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$23.00
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Robert Oster Signature fountain-pen ink in Motor Oil, 50ml bottle, features a swatch displaying its unique shade inspired by South Australian wine regions.

Motor Oil - 50ml

$23.00

Robert Oster

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Robert Oster Lake of Fire ink, 50ml bottle, features a gold label and deep blue hue with a subtle red sheen, inspired by South Australia.
Robert Oster
Lake of Fire - 50ml
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$23.00
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Robert Oster Lake of Fire ink, 50ml bottle, features a gold label and deep blue hue with a subtle red sheen, inspired by South Australia.
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Lake of Fire - 50ml

$23.00

Robert Oster

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Robert Oster Bondi Blue fountain-pen ink, 50ml bottle, features a gold-foil label. Includes a vibrant blue ink swatch with darker sheen hints.
Robert Oster
Bondi Blue - 50ml
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$23.00
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Robert Oster Bondi Blue fountain-pen ink, 50ml bottle, features a gold-foil label. Includes a vibrant blue ink swatch with darker sheen hints.
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Bondi Blue - 50ml

$23.00

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Frankly Blue - 2ml ink sample, showcasing dark-blue swatch with watery edges on white paper, featuring THE DESK BANDIT watermark at the bottom.
Robert Oster
Frankly Blue - 2ml
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$1.70
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Frankly Blue - 2ml ink sample, showcasing dark-blue swatch with watery edges on white paper, featuring THE DESK BANDIT watermark at the bottom.

Frankly Blue - 2ml

$1.70

Robert Oster

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Ten Dollar Gold - 2ml
Robert Oster
Ten Dollar Gold - 2ml
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$1.70
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Ten Dollar Gold - 2ml
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Ten Dollar Gold - 2ml

$1.70

Robert Oster

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Napa - 2ml
Robert Oster
Napa - 2ml
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$1.70
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Napa - 2ml
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Napa - 2ml

$1.70

Robert Oster

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Blue Velvet Storm (Shake 'N' Shimmy) - 50ml bottle of shimmering Robert Oster ink with a close-up swatch showing its unique sheen.
Robert Oster
Blue Velvet Storm (Shake 'N' Shimmy) - 50ml
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$31.00
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Blue Velvet Storm (Shake 'N' Shimmy) - 50ml bottle of shimmering Robert Oster ink with a close-up swatch showing its unique sheen.
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Blue Velvet Storm (Shake 'N' Shimmy) - 50ml

$31.00

Robert Oster

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Robert Oster Black is Black (50ml) Bottled Ink
Robert Oster
Black is Black (50ml)
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$23.00
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Robert Oster Black is Black (50ml) Bottled Ink
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Black is Black (50ml)

$23.00

Robert Oster

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Smokescreen - 50ml bottle of Robert Oster Signature dye-based ink, featuring a circular swatch of its unique color, inspired by South Australia's wine regions.
Robert Oster
Smokescreen - 50ml
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$23.00
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Smokescreen - 50ml bottle of Robert Oster Signature dye-based ink, featuring a circular swatch of its unique color, inspired by South Australia's wine regions.

Smokescreen - 50ml

$23.00

Robert Oster

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new Robert Oster Signature Ink Sinner's Heart, 50ml fountain pen ink, showcases a deep burgundy watercolor-like texture, emphasizing sustainable Australian craftsmanship and vibrant writing expression.
Robert Oster
Sinner's Heart - 2ml
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$1.70
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Robert Oster Signature Ink Sinner's Heart, 50ml fountain pen ink, showcases a deep burgundy watercolor-like texture, emphasizing sustainable Australian craftsmanship and vibrant writing expression.
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Sinner's Heart - 2ml

$1.70

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Candied Mint (Shake 'N' Shimmy) - 2ml
Robert Oster
Candied Mint (Shake 'N' Shimmy) - 2ml
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$2.00
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Candied Mint (Shake 'N' Shimmy) - 2ml
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Candied Mint (Shake 'N' Shimmy) - 2ml

$2.00

Robert Oster

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Muddy Water - 2ml
Robert Oster
Muddy Water - 2ml
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$1.70
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Muddy Water - 2ml
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Muddy Water - 2ml

$1.70

Robert Oster

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Robert Oster Glistening Orange Rumble (Shake 'N' Shimmy) - 2ml Ink Sample
Robert Oster
Glistening Orange Rumble (Shake 'N' Shimmy) - 2ml
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$2.00
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Robert Oster Glistening Orange Rumble (Shake 'N' Shimmy) - 2ml Ink Sample
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Glistening Orange Rumble (Shake 'N' Shimmy) - 2ml

$2.00

Robert Oster

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Bottle of Robert Oster Signature Ink, Taiwan Blue - 50ml, with a teal swatch displaying a pinky-red sheen, emphasizing vibrant, sustainable, and smooth-writing qualities.
Robert Oster
Taiwan Blue - 50ml
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$23.00
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Bottle of Robert Oster Signature Ink, Taiwan Blue - 50ml, with a teal swatch displaying a pinky-red sheen, emphasizing vibrant, sustainable, and smooth-writing qualities.
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Taiwan Blue - 50ml

$23.00

Robert Oster

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Robert Oster Signature Ink - Rose Gilt Tynte (Shake 'N' Shimmy), 50ml bottle with a circular swatch showing its shimmery metallic purple-pink shade.
Robert Oster
Rose Gilt Tynte (Shake 'N' Shimmy) - 50ml
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$31.00
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Robert Oster Signature Ink - Rose Gilt Tynte (Shake 'N' Shimmy), 50ml bottle with a circular swatch showing its shimmery metallic purple-pink shade.
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Rose Gilt Tynte (Shake 'N' Shimmy) - 50ml

$31.00

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Burned Orange - 50ml Robert Oster Signature fountain-pen ink bottle beside a swatch of its coppery-brown hue, inspired by South Australia's natural palette.
Robert Oster
Burned Orange - 50ml
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$23.00
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Burned Orange - 50ml Robert Oster Signature fountain-pen ink bottle beside a swatch of its coppery-brown hue, inspired by South Australia's natural palette.
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Burned Orange - 50ml

$23.00

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Robert Oster Signature ink bottle labeled Signature with a swatch of deep purple color, 50ml size, inspired by South Australia's palette.
Robert Oster
Deep Purple - 50ml
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$23.00
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Robert Oster Signature ink bottle labeled Signature with a swatch of deep purple color, 50ml size, inspired by South Australia's palette.
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Deep Purple - 50ml

$23.00

Robert Oster

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Bottle of Robert Oster Signature fountain-pen ink, Eucalyptus Leaf - 50ml, with a dark green/black ink swatch in the upper right corner.
Robert Oster
Eucalyptus Leaf - 50ml
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$23.00
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Bottle of Robert Oster Signature fountain-pen ink, Eucalyptus Leaf - 50ml, with a dark green/black ink swatch in the upper right corner.
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Eucalyptus Leaf - 50ml

$23.00

Robert Oster

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Robert Oster Signature Ink Sublime - 50ml black-glass bottle with gold label, shown with a circular swatch of bright grassy green ink.
Robert Oster
Sublime - 50ml
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$23.00
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Robert Oster Signature Ink Sublime - 50ml black-glass bottle with gold label, shown with a circular swatch of bright grassy green ink.
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Sublime - 50ml

$23.00

Robert Oster

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Bottle of Robert Oster Signature Ink, Black Violet - 50ml, featuring a dark violet/blue hue inset, inspired by South Australia's wine regions.
Robert Oster
Black Violet - 50ml
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$23.00
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Bottle of Robert Oster Signature Ink, Black Violet - 50ml, featuring a dark violet/blue hue inset, inspired by South Australia's wine regions.
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Black Violet - 50ml

$23.00

Robert Oster

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Barossa Grape - 50ml Robert Oster Signature ink bottle with gold-foil label, showcasing its distinctive dark purple sheen in the upper right.
Robert Oster
Barossa Grape - 50ml
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$23.00
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Barossa Grape - 50ml Robert Oster Signature ink bottle with gold-foil label, showcasing its distinctive dark purple sheen in the upper right.

Barossa Grape - 50ml

$23.00

Robert Oster

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Blue Martini - 2ml
Robert Oster
Blue Martini - 2ml
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$1.70
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Blue Martini - 2ml
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Blue Martini - 2ml

$1.70

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Ten Dollar Blue - 2ml
Robert Oster
Ten Dollar Blue - 2ml
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$1.70
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Ten Dollar Blue - 2ml
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Ten Dollar Blue - 2ml

$1.70

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Muddy Dragon - 2ml
Robert Oster
Muddy Dragon - 2ml
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$1.70
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Muddy Dragon - 2ml
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Muddy Dragon - 2ml

$1.70

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Oklahoma City - 2ml
Robert Oster
Oklahoma City - 2ml
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$1.70
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Oklahoma City - 2ml
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Oklahoma City - 2ml

$1.70

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Kansas City - 2ml
Robert Oster
Kansas City - 2ml
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$1.70
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Kansas City - 2ml
/ 1 / 2

Kansas City - 2ml

$1.70

Robert Oster

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Robert Oster Rose Gold Antiqua (Shake 'N' Shimmy) - 50ml Bottled Ink
Robert Oster
Rose Gold Antiqua (Shake 'N' Shimmy) - 50ml
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$31.00
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Robert Oster Rose Gold Antiqua (Shake 'N' Shimmy) - 50ml Bottled Ink
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Rose Gold Antiqua (Shake 'N' Shimmy) - 50ml

$31.00

Robert Oster

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Robert Oster Australis Oak - 50ml Bottled Ink
Robert Oster
Australis Oak - 50ml
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$23.00
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Robert Oster Australis Oak - 50ml Bottled Ink
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Australis Oak - 50ml

$23.00

Robert Oster

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