S skye08 Member Joined Jul 11, 2013 Messages 6 Reaction score 0 Jul 12, 2013 #1 Do Evaporation lines usually have color to them??
LiLi2 Well-Known Member Joined Apr 16, 2013 Messages 1,307 Reaction score 0 Jul 12, 2013 #2 On blue dye tests - often, yes. On red dye tests - *usually* not.