Speedball and others claim their inks is "non-clogging" which, as NedC pointed out, is not true and if it's true then the ink is not india ink. Pelikan's fount India is not really India ink I don't think it contains shellac. I might make a DIY india ink and see how it goes! This might help anyone who faces the same problem. to test a "homemade" India ink of dry carbon pigment, 0.1% by weight mixed with normal saline solution was unsuccessful." India ink made by Koh-I-Noor (Bloomsburg, N.J.) is described as composed of carbon particles (approximately 7% by weight) with stabilizing diluents present in all commercial products, including ethylene glycol methyltert-butyl ether (Methyl Carbitol), phenol, ammonium hydroxide and shellac, and was diluted 1:100 with 0.9% normal saline solution and successfully tested by Salomon et al. The composition of India ink made by Pelikan (Hanover, Germany) is described as containing ethylene glycol, sodium tetraborate decahydrate, ammonia and gelatin, and when diluted in 1:10 dilution in sterile water, it caused an abscess. The composition of India ink made by Higgins (Faber-Castell, Lewisberg, Tenn.) is described as containing about 7% carbon pigment, 5% propylene glycol and smaller concentrations of shellac, ammonium hydroxide and surfactant and when the composition was diluted in equal parts (50:50) with bacteriostatic water, it caused an inflammatory response. "The compositions of various commercially available India inks and comparisons of their use in endoscopic tattooing of the colon have been described by P.
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