Whenever the Technological Institute tests a product, this is done in a climatic chamber that simulates the conditions in a typical indoor space. Over 28 days of testing, the Danish Technological Institute takes air samples showing the concentrations of the various VOCs. The first test is taken already after three days.
In addition, tests are carried out to detect noxious odours which may not be hazardous, but nevertheless have an adverse impact on air quality and, thus, the indoor climate. A test panel of at least 15 people assesses whether a product emits an odour that is acceptable in a building.
“The degassing of many volatile substances flattens out over the 28 days. But materials that gradually decompose will over time also emit secondary substances that we do not test for with this method,” Helene Klinke says.
She stresses that VOCs are also not the only parameter that determines the health of a building material. Because there are also problematic ingredients that ‘reside’ in the product that can be harmful to humans and the environment without necessarily showing up in a degassing measurement.
“This is why it can be beneficial for manufacturers to qualify for different labels and certifications which complement one another,” she adds.
>> Read about Troldtekt’s certifications and labels here