In the world of fountain pens, the ink you choose can dramatically affect your writing experience. One key distinction to understand is between waterproof fountain pen inks and non-waterproof inks. Here’s what you need to know to make an informed decision about which type of ink is best for your needs.
Waterproof Inks: The Defenders of Durability

Waterproof inks are designed to resist fading and running when exposed to moisture. This makes them ideal for important documents, artwork, and outdoor writing. These inks often rely on pigments or special dye formulations that bond with the paper, ensuring that once the ink sets, it’s there to stay. Notable examples include Sailor Kiwa-Guro and Platinum Carbon Ink or Platinum Chou Kuro ink.
Check out the Platinum Carbon Ink and Platinum Chou Kuro ink side by side in this ink comparison video from Fall 2023.
Advantages of Waterproof Fountain Pen Inks:

- Permanence: Ideal for archival quality writing, from legal documents to heartfelt letters.
- Smudge Resistance: Less likely to smear once dried, beneficial for left-handed writers.
- Versatility: Suitable for use on various papers, including glossy and coated types.
- Weather Resistance: Perfect for writing that needs to withstand environmental elements.
Non-Waterproof Inks: The Beauties of Blending

Non-waterproof inks, typically dye-based, are prized for their vibrant colors and shading qualities. They flow more freely in your fountain pen, providing a smoother writing experience. Brands like J. Herbin and Diamine offer a plethora of shades that can add personality and flair to any writing or drawing.
Advantages of Non-waterproof Inks:
- Color Variety: Available in a wide range of colors, providing more options for artistic expression.
- Less Staining: Less likely to stain the insides of demonstrator pens, keeping them clean and clear.
- Easy Cleanup: Easier to wash off hands and more forgiving on clothing or carpets in case of spills.
- Artistic Freedom: Ideal for use as washes in sketches, providing a soft, watercolor-like effect when blended with water.
- Easier Maintenance: Generally easier to clean out of pens, reducing the risk of clogging.
- Cost-Effective: Often less expensive than their waterproof counterparts.
Choosing Your Ink: Consider Your Needs

When selecting between waterproof fountain pen inks and non-waterproof inks, consider your primary use cases. If longevity and resistance to the elements are priorities, waterproof inks are the way to go. However, if you’re looking for expressive color options and ease of use, non-waterproof inks might be more suitable.
Experimentation is Key: Find the Ink that Suits You

The best way to discover what works for you is through experimentation. Many retailers offer ink samples, allowing you to try different formulas without committing to a full bottle. Remember, the right ink can transform your writing from a mere function to an art form. Whether you’re sealing deals or sketching in your journal, there’s an ink tailored to your needs.
Embrace the Variety: Fountain Pen Ink is a Personal Decision
Fountain pen enthusiasts often enjoy having a variety of inks at their disposal, allowing them to choose the perfect ink for any occasion. Explore, experiment, and, most importantly—enjoy the journey through the colorful world of fountain pen inks.
For the latest and greatest in fountain pen inks, visit Pen Chalet today!
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