fluorescein
fluorescein
a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed) [rumeno barvilo, ki je vidno tudi pri zelo razredčenih koncentracijah; uporablja se kot absorpcijski indikator, ko se srebrov nitrat dodaja k natrijevemu kloridu, da se izloči srebrni klorid (postane roza, ko v raztopini ni več kloridnih ionov in negativni ioni fluoresceina se absorbirajo)]
Dostopnost
Dostopnost