• Armadillo
  • Armadillo
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Fountain Pen Ink

Armadillo

PN100608

$13
$15
$13
Free shipping offer* $75+

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Orders Ship From Pennsylvania

Armadillo will display a light grey to grey pink in low saturations (like an armadillo snout), then shift to a unique pink purplish black in high saturations (like an armadillo shell.) The broadest color spectrum is visible on slightly hydrophobic fountain pen friendly papers like Tomoe River (used to produce our color swatch.) The pinks are mostly skipped on Rhodia paper. 

Armadillo is part of the Keystone Formula fountain pen ink line, our traditional dye-colorant ink. The 60mL volume will provide approximately 75 standard converter refills assuming a 0.8mL draw. .

Enjoy Armadillo as a standalone fountain pen ink, or blend it with other Birmingham Pen Co. fountain pen inks to craft your personalized shade.

Armadillo
Armadillo

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A Chemistry Of Color

How It's Made

Our fountain pen ink formulas are developed in-house using fine colorant and a meticulously tuned vehicle. Every bottle reflects our commitment to performance, value, and creative exploration.

Formula Guide

We've compartmentalized our fountain pen ink recipes into four principal categories characterized by differentiating elements of the colorant component in the formula. A colorant is a dye or pigment that exhibits color. An ink vehicle is a series of chemicals used to transport colorant from storage reservoir to substrate (paper in our case). 

Keystone Formula inks are engineered using water-soluble dyes to produce a broad spectrum of colors with a variety of unique and desirable writing properties. Fitting the bill for a traditional fountain pen ink, this series by far the most popular. 

Delicate Formula inks are constructed with dyes selected for both performance and washability. Colors in this series will clean easily from most fabrics and surfaces with soap and water.

Everlasting Formula inks are compounded with pigmented colorants to produce highly water-resistant and archival properties on most papers.

Twinkle Formula inks are formulated using hybrid dye and pigment combinations to create a unique twinkling luster. 

Sample Recipe

Recipe coming soon.

Prepared In Pennsylvania

  • From The Maker

    Skip the middleman and get the best experience by purchasing directly from a maker. As a tiny Pennsylvania based manufacturer, we're here to stand behind your purchase with expert guidance and support.

  • Packed With Care

    Glass bottles are cartoned and individually wrapped in repurposable cellulose wadding for added cushioning and protection in transit. Meticulous care is applied to every package to ensure product arrives safely and ready to enjoy.

  • Ships From PA

    All of our orders ship from Pennsylvania within 1-2 business days on average, unless otherwise prominently noted in the product description. Most packages are thoughtfully prepared by our part-time fulfillment team in Reading, PA.

  • Free Freight Offer

    Free shipping offer* active for orders $75+ within the continental USA.

    A flat $9 shipping rate is available for all other orders continental U.S. with calculated rates for Alaska & Hawaii.

    International shipping is not available.
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Quality In The Details

Our fountain pen ink formulas are developed in-house using fine colorant and a meticulously tuned vehicle. Every bottle reflects our commitment to performance, value, and creative exploration.