Fig. 1 shows the SPS11-10µ in an option with integrated computer. The device excels by a compact design, advantageous especially at limited laboratory space. All samples are in a climatic chamber (Fig. 2), closed by a cover of thermally insulated glass.

As shown in Fig. 2, the samples are filled in aluminium dishes with a diameter of 5 cm. These dishes are placed in a circular sample tray with 12 sample positions. The sample pan of the first position is used as internal reference and therefore stays empty. The relatively large dimension of these sample dishes allows the analysis of representative sample amounts (e.g. the analysis of powders or bulk materials or several tablets), voluminous and lightweight samples as textile fibres (e.g. wool) and down as well as bulky shaped samples (rock and concrete sections, plastics etc.). The transparent cover allows the observation of the samples over the entire experiment. Visible changes like discolorations, liquefactions etc. can be continuously monitored and documented.

An autosampler turns the sample tray and places the samples on a semi analytical balance (top-loading principle) with a resolution of 10 µg and a maximum load capability of 200 g. The performance of this balance allows the investigations on smallest sample amounts (several milligrams) as well as of heavy and bulky samples (e.g. building materials, minerals). The high precision and reproducibility of the system is granted by the software integrated fully automatic self calibration routine of the balance. The changes in mass of the sample dishes caused by climatic influences during an experiment are continuously compensated with the reference sample (drift compensation).

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