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DIN EN 12667:2001
Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Products of high and medium thermal resistance; English version of DIN EN 12667
The document describes principles and testing procedures for determining the thermal resistance. It applies to the guarded hot plate method using apparatus and the heat flow meter method for dry and moist products with high and medium thermal resistance. It applies to any mean temperature. It is intended primarily for building materials, it may also be used for specimens of any materials that conforms to the requirements specified.
Deutsches Institut für Normung [din]