Quote Originally Posted by mtjade2007 View Post
It's light grey or pinkish as you said. Definitely not dark or black. I guess I am all set to go for the experiment. Thanks, hrst. I will report back when I get some result.
I also have some CD4 from Zone V, that I bought in 1987! It is a bit on the dark side, so I have it put aside for emergencies, but it still works. It may be about 10% or so less effective than the fresh stuff I am using. It's amazing how long dry chemistry keeps.