The Rudolf Steiner Archive moved in the year 2002, into the premises of House Duldeck, into  new storage rooms, specially built and conditioned in the basement, for best preservation of the holdings following standards for cultural heritage.   The strongrooms for our holdings have controlled climate conditions by use of dehumidifiers and constant monitoring with professional thermohygrometers (Temp. 20 °C/ Humidity 50%). The use of a careful chosen furniture designed for archives (rolling shelves) and storage materials that can offer best conditions to preserve the holdings from deterioration are an important part of our efforts. We have incorporated the use of storage boxes, foldiers, envelopes and other elements with acid free paper/cardboard to protect our records following international standards which specify the requirements for document storage and preservation.