Abstract: A ventilation unit for a freezer chamber, with a conduit and at least one heating element, wherein in the conduit, at least in sections, an air-permeable filler material is disposed, as well as a freezer chamber with such a ventilation unit as well as methods for operating such ventilation unit.

Abstract: A method for the development of a thermally insulating sandwich-structured laminate, such as a sandwich-structured laminate of a housing of a climate chamber for the high temperature range, with an internal wall and an external wall, can include the method steps: providing the internal wall, adhering at least one high temperature stable insulation panel onto the internal wall, positioning the external wall with respect to the internal wall such that between the internal wall and the external wall the at least one high temperature stable insulation panel and a hollow volume are developed. The method can further include filling the hollow volume with a PUR foam for the formation of a second rigid foam layer connecting the at least one high temperature stable insulation panel and the external wall.

Abstract: A method for the development of a thermally insulating sandwich-structured laminate, such as a sandwich-structured laminate of a housing of a climate chamber for the high temperature range, with an internal wall and an external wall, can include the method steps: providing the internal wall, adhering at least one high temperature stable insulation panel onto the internal wall, positioning the external wall with respect to the internal wall such that between the internal wall and the external wall the at least one high temperature stable insulation panel and a hollow volume are developed. The method can further include filling the hollow volume with a PUR foam for the formation of a second rigid foam layer connecting the at least one high temperature stable insulation panel and the external wall.

Abstract: A ventilation unit for a freezer chamber, with a conduit and at least one heating element, wherein in the conduit, at least in sections, an air-permeable filler material is disposed, as well as a freezer chamber with such a ventilation unit as well as methods for operating such ventilation unit.

Abstract: A method for the development of a thermally insulating sandwich-structured laminate, such as a sandwich-structured laminate of a housing of a climate chamber for the high temperature range, with an internal wall and an external wall, can include the method steps: providing the internal wall, adhering at least one high temperature stable insulation panel onto the internal wall, positioning the external wall with respect to the internal wall such that between the internal wall and the external wall the at least one high temperature stable insulation panel and a hollow volume are developed. The method can further include filling the hollow volume with a PUR foam for the formation of a second rigid foam layer connecting the at least one high temperature stable insulation panel and the external wall.

Abstract: A laboratory cabinet, for example a cold room, heating cabinet, drying oven or incubator, with a housing having at least one outer door with an outer door closure, which has at least one inner chamber, which is closable by an inner door with an inner door closure, wherein the inner door closure is a mechanical closure, that the laboratory cabinet with the outer door closed has actuatable first means for releasing the inner door closure of the inner door, which are electrically actuatable, and that the laboratory cabinet has second means which are designed such that upon opening the outer door, the inner door also opens.