I would assume so, but I’ve never clarified to that extent with any latex manufacturer, and to the best of my understanding the reported percentage by eco-institute would be for a finished, consumer ready product. What are your concerns about the rubber content of the finished latex product? Is it a health concern, or a performance concern? I guess it’s a balance of things for all consumers to different degrees, like comfort vs. toxicity, sleep temp. vs. pressure reduction, etc… For myself as a manufacturer, would I choose a hypothetical lesser product, performance wise, for a 10% improvement in rubber content? Also, If I didn’t like the feel of an entirely foamless mattress (obviously subjective), what is the alternative? I do agree that the industry does play fast and loose with things like “100%” anything and “chemical free”, and wish this whole thing were somehow more simple—like mattresses were made of unfinished maple or something like that… lol.