DS EN 15599-1:2010 Thermal Insulation Products For Building Equipment And Industrial Installations - In-Situ Thermal Insulation Formed From Expanded Perlite (Ep) Products - Part 1: Specification For Bonded And Loose-Fill Products Before Installation Defines the requirements for expanded perlite products which are used for the thermal insulation of building equipment and industrial installations with an operating temperature in the range of approx