Any way of checking what materials/process is used?

Hello John & Ryan,
I just bought a 2" topper for a single bed. The seller described it as "100% natural latex topper....pure and 100% made from talalay latex and 100% natural." Comfort is medium and the ILD is about 25.
It does feel like latex to me (because it is springy) but is there any way of checking the description further.
The colour is beige. The core weighs just over 5kg. There is no strong smell in terms of chemicals. There seems to be no join lines where talalay slabs would be stuck together (or can a single be made in one slab?).
Many thanks,
Mike