Hi MFC Memory Foam Comfort,
Eco-Institut also tests for 100% natural latex so there are also many other manufacturers that produce 100% natural Dunlop latex products that aren’t GOLS certified but are Eco-Institut certified that use only natural rubber. QUL also includes a certification for natural rubber and harmful substances.
Outside of the certifications mentioned in post #2 here (and I will be adding C2C shortly) … Oeko-Tex also has some additional certifications here that also certify for environmental and social issues and FSC also has a certification that includes environmental and social issues and the Rainforest Alliance also includes biodiversity and social issues and Eurolatex Eco Standard also includes a certification for harmful substances and VOCs and TUVRheinland also has a certification for harmful substances and VOC’s and there are a few others as well but these are much less common in the mattress industry.
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Talalay Global makes a 100% natural Talalay product that doesn’t use any synthetic latex in the formulation but to my knowledge they don’t have an actual certification that will “prove” it. They also use some fillers in their latex so they probably wouldn’t meet the criteria for certifications such as GOLS or Eco-Institut. They are Oeko-Tex standard 100 Class 2 certified for harmful substances and VOC’s.
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Phoenix