In detecting nicotine and its metabolites in the body, levels remain detectable in the urine only for 3 to 4 days. However, this may be different for some cases. For passive smokers, urine nicotine test can be positive for as long as 15 to 20 days.
This slate blends well with any type of stone or frame structure and is also used as the basic percentage, usually 50%, in roofs where several colors are mixed. Semi-Weathering Gray - A traditional slate-gray color ranging from a clear appearance to having small black markings.
Can I change the color or stain my travertine slate a darker color? Saved From: http://stoneandtilepros.com/kb/article/can-i-change-the-color-or-stain-my-travertine-slate-a-darker-color-199.html. Q: I just purchased an extremely light colored travertine slate for my front room, but would like a richer, darker. color for the slate. Since it has not yet been sealed, can the slate be colored or stained before it is.