ILD "comparisons" - talalay VS poly foam

Mattress Talk General Mattresses Questions
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Hello all

I realize latex and polyurethane or “regular” foam are two very different materials but I’m trying to find information on how the
ILDs of each might compare, for instance a 36 ILD PU foam would equal (my instincts are telling me) about a 25 ILD in latex in firmness/support?

This was a little difficult to find info on by doing a forum search using common terms.

Any “firmness” or other comparisons of ILDs in these two materials would be appreciated.

Thanks