D76 and Microdol-X life time

The old photo lab of my universaty department has a few old D76 and Microdol-X packages (possibly bought in the 90's maybe, do not remember the expiral date, but it should a few time ago...) for making 15L, if I'm not mistaken. I think all of them are still sealed in the plastic bags. Are the developers still operational? I ask because because the old lab now is part of the paleoanthropology area of the course and I thought that would be a good idea to sell the developers to get a few money for a few things we need.

If the contents are still loose and granular with no clumping they should still be viable. I've used D-76 marked from the 1970's not long ago.