my DPD powder (0870) is turning a shade or 2 on the gray side. I assume this is just because of moisture getting to the powder. It's still usable isn't it?
Ok, thanks chem Geek, I think I'm good then. I had bought some more at the start of the season and put the gray color stuff on the shelf. I think I will go ahead and use it up before it turns purple.
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