EOSIN
| Date | Clue |
|---|---|
| 2019-02-22 | Dye used in some ballpoint ink |
| 2018-05-14 | Certain red dye |
| 2014-11-22 | Cosmetics dye |
| 2012-12-26 | Rose-red dye |
| 2011-12-04 | Biology lab stain |
| 2008-10-28 | Red dye |
| 2007-07-28 | Red stain in a lab |
| 2005-02-08 | Dye chemical |
| 2003-01-03 | Biological stain |
| 2000-01-05 | Biology lab stain |
| 1997-07-27 | Rose-red dye |
| 1994-10-09 | Red dye |
| 1994-08-14 | Red dye |
| 1994-05-15 | Red dye |
| 1993-12-05 | Lab stain |