Hi there — Thanks for your question. The general answer is no.

The Certi-Pur standard applies to polyurethane foam and looks for a number of harmful materials in order to certify that neither the presence nor offgassing of such materials exceeds some minimally acceptable threshold. This is certainly a great reassurance, and is leagues better than poly foam that is not certified. That said, at the end of the day, all polyurethane foam is still a completely petroleum-based product, and is therefore far from chemical free.

Latex, on the other hand, comes in a few varieties. All-natural latex is made entirely from the sap of a rubber tree and therefore is contains no chemicals (other than in some cases a small amount of additives that may be needed during the process of turning the rubber sap into a foam). Synthetic latex is a petroleum-based product (like polyurethane) however the resulting product is considered to be far cleaner from a chemical standpoint than poly foam. Natural blend latex (often just called "natural latex" by manufacturers) is made with a combination of natural rubber sap and petroleum.

So all in all, pretty much any kind of latex is likely to have fewer harmful chemicals and less off gassing than Certi-Pur foam, and if it's natural blend latex or all-natural latex then the difference on this front would be even greater.

I hope that's helpful.