The Japanese standard method of determining the
formaldehyde emission from samples, before coating
and after coating, was used. The 24 h desiccator method
uses a common glass desiccator with a volume of 10 l.
Ten test specimens, with dimensions of 5 cm 15 cm ;
are positioned in the desiccator. The emission test lasts
24 h in the covered desiccator at a temperature of 20 1C.
The emitted formaldehyde is absorbed in a water-filled
petri dish and is analyzed by JIS A 1460, Building
boards determination of formaldehyde emission–Desiccator method.