Particle board is categorized as E1 or E0 according to its level of formaldehyde release.
In May 2018, a new formaldehyde testing method, the 1m3 Climate Chamber method, is introduced.
Under the updated standards, the numerical value of E1 level formaldehyde release is 0.124mg/ m3. E0 material reaches the highest safety level stipulated in Europe.
Since E0 materials are the safest and more environmentally friendly export products, they will be comparatively pricey (20% more expensive than E1 materials).