Hi mg517,
The ILD’s of the layers aren’t important to know (ILD is a “comfort spec” and your testing will tell you much more about whether a mattress is firm or soft enough for you in terms of PPP than ILD specs) but the density of all the polyfoam or memory foam layers is what you would need to know the quality and durability of the foam layers.
If you were able to find this out (see post #4 here for the information you would need to assess a mattress in terms of quality and durability and to identify any “weak links” in the mattress). It would be great if you can post them here for future reference for others that may be looking at Charles P. Rogers.
Hopefully you were able to find out the “quality specs” of the mattress but if you didn’t and you are comfortable with your purchase and any risks involved in choosing a mattress where you don’t know the quality of the materials then congratulations on your new mattress
Phoenix