Is Karkos' Fountain Pen Ink Waterproof?

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KARKOS Fountain Pen Ink Waterproof Test

If you have ever looked for fountain pen ink on Aliexpress, you have undoubtedly seen this brand. With prices anywhere from $0.60 to $4.00 for a 30ml bottle, this ink can be quite an attractive purchase. For people that use fountain pens as tools for creating art, one of the most important features of ink is its water resistance. Quick Answer: Is Karkos Fountain pen ink Waterproof? Yes, after about 4 hours, Karkos ink is resistant to water. Further testing is shown below.



Waterproof Testing
   As you can see in the test, prior to the 30-minute mark, both writing and the dark block are not water-resistant at all. At 30 minutes, you can see that the text is mostly waterproof with a slight bit of pigment still moving. It is not until the 4-hour mark that the block becomes mostly waterproof. An important thing to keep in mind is that if you use so much ink that there is a droplet formed on the page you will need to wait at least 24 hours. This experiment was done on 140lb 300 gsm watercolor paper using a Duke 209 Fude nib fountain pen.



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