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Noodler's Baystate Blue needs no introduction. I am just a few months into the fountain pen hobby, but even I know that there is no other ink that polarizes the fountain pen community as much as the Baystate Blue (BSB). You either hate it or love it. I bought a bottle of this ink because much of my work happens near water tanks and I needed a waterproof ink for signing documents. But after I ordered the BSB on Amazon, I came to know about another water resistant ink that is made by a part time ink and pen making medical doctor named Sreekumar who lives just 3 hours away from my home. He owns Krishna Inks and Krishna Pens. His waterproof ink is beautifully named as Krishna Lyrebird Water Sapphire Blue. So I got a bottle of that too. I now use BSB in office and Krishna Ink at home for signing the documents. The comparison of both inks, including their resistance to water and bleach, follows. 1. Colour The picture compares Krishna Water Sapphire and Baystate Blue with common inks like Lamy Blue, Sheaffer Blue and Camlin Blue on TNPL 80 GSM Platinum Copier paper. Without question, Baystate Blue is the best colour (in my opinion). In fact the BSB actually jumps out of the paper and my amateur photography skill doesn't do justice to its vibrance. All other colours including Krishna Water Sapphire look dull and boring in comparison. 2. Writing Experience I used two identical Camlin Elegante fine nib fountain pens and Rhodia paper to test the writing experience. Baystate Blue is wetter and and gives more line width. Krishna Ink has less flow but is no less smooth. 3. Drying time I again used identical Camlin Elegante fine nibbed pens on Rhodia paper to determine the drying times. Average drying time for both inks is seen to be about 10 seconds on Rhodia. I repeated this test on TNPL 80 GSM copier paper and the drying time was about 8 seconds for both inks. 4. Water Resistance a) Drip Test I dropped nearly equal amounts of water on the handwritten samples and let the water remain for 30 minutes. Photograph shows the condition after 30 minutes. Both inks showed some top layer run off, but BSB is more water resistant to Krishna Water Sapphire. b) Dip Test I dipped swabs of 5 ink different inks on TNPL copier paper in plain tap water filled tumblers. Before dipping: The next picture is taken just a few minutes after dipping. Lamy, Sheaffer and Camlin inks are no longer in the race. 30 minutes later: Krishna Ink is somewhat water resistant and we can still read the text. Baystate Blue is also not waterproof but clearly more water resistant than the Krishna Ink. 5. Bleach Resistance This was the most interesting of all tests. I used the same ink swabs which had undergone the dip test and poured a few drops of 0.5% w/w Harpic bleaching solution over them. 5 minutes after the exposure to the bleach, Baystate Blue had already started dissolving but Krishna Ink was holding up: 1 hour after exposure: Within an hour, Baystate ink was almost gone and the text was no longer visible. Krishna Water Sapphire was still holding up and the text remained legible. 2 hours after exposure: Part of the text written with Krishna Ink was visible even after 2 hours! Krishna Ink thus won the bleach resistance test. 6. Price (in India) Baystate Blue: INR 4888/- (US$ 66.75) on Amazon for 133 ml (4.5 oz) bottle, after a 75% discount. But you get a beautiful Noodler's Charlie pen for free with the ink. Krishna Water Sapphire: Rs 250/- (US$ 3.41) for 30 ml bottle. The math is left to you. 7. Staining Potential Noodler's Baystate Blue is notorious for staining various surfaces. But I have found it to be a non-issue so far. Bleach can easily remove it. Just be careful not to spill it over something that can't be bleached - like the currency notes, fine leather, costly carpets etc. Krishna Ink stains can be removed with water (and soap, if required) if you notice them immediately. But once the ink dries, those stains can be stubborn due to the water and bleach resistance. Be careful while handling either ink. The Verdict I like both the inks. Both Baystate Blue and Krishna Lyrebird Water Sapphire have character. I use both the inks regularly. So which one to buy? The choice is yours.