Thread: Powder Use By Date?

@grandpamac you know your powders well, if I recall I am pretty sure the tin can it is Dupont.
Both containers have been opened, however, the Grandfather I inherited them off was very particular about storage and labeling, it has definitely not been mixed, or substituted by another unknown powder.
However, in the interest of my own safety, I will pay extra attention when checking them over tonight.