nigrosine मीनिंग इन हिंदी

उदाहरण वाक्य

1. During the crocodile wrestling scene, a mechanical crocodile, equipped with nigrosine dye sacks to simulate blood, was used.
2. The second TLC test found nothing in the ink inconsistent with the date of 1888, and that the ink contained iron and sodium, but no nigrosine.
3. The Popular Science iron gall writing ink article also mentions methyl violet dye could be used to make a violet iron gall ink without revealing the amount and soluble nigrosine dye for an immediate black iron gall ink.
4. The first test, using thin layer chromatography ( TLC ) revealed the ink contained no iron, and was based on a synthetic dye called nigrosine, patented and commercially available in 1867, and in general use in writing inks by the 1870s.