The STA 2500 Regulus features a highly reliable, fully equipped instrument package for STA measurements up to 1600°C at an attractive price.

The natural gas flow in the top-loading system guarantees automatic protection of the balance against condensation and contamination. The tailor-made differential balance system cancels out buoyancy and convection influences over a broad temperature range. This provides easy operation without the need for timeconsuming baseline runs.

Measurements can be performed in inert and oxidizing atmospheres but also under vacuum. The atmosphere can be dynamic or static. The built-in mass flow controllers (MFCs) are software-controlled and allow gas changes at any time during the test.

The top-loading design of the STA allows for convenient coupling to gas analysis systems such as FT-IR (Fourier Transform Infrared) spectrometer, MS (mass spectrometer), or GC-MS (gas chromatograph – mass spectrometer). During thermal treatment, the gases evolved can be simultaneously analyzed.

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Thermogravimetric Effects:

• TGA curves in absolute mass change (mg) or relative mass (%)
• Automatic evaluation of mass change steps and characteristic temperatures
• Extrapolated onset and endset
• Peak temperatures and values of the 1^st and 2^nd derivatives
• TGA stability check for each determination of the measurement
• Rate-controlled mass loss

Caloric Effects:

• Determination of caloric effects in [μV], [μV/mg] and [mW/mg]
• Determination of onset, peak, inflection and end temperatures
• Automatic peak search
• Exothermal presentation in accordance with DIN or ASTM (selectable)
• Calculation for conversion of DTA in DSC signal

A variety of crucibles made of alumina, platinum, aluminum and quartz is available in different shapes and sizes. The STA 2500 Regulus is delivered with slip-on plates which allow for nearly all kinds of sample pans (see table below). The large-volume crucible requires the large slip-on plate.

By coupling the STA 2500 Regulus to a gas analysis system such as FT-IR (Fourier Transform Infrared) spectro-meter, QMS (quadrupole mass spectrometer), or GC-MS (gas chromatograph – mass spectrometer), information on the type of gases evolved as a function of time or temperature can be obtained. This yields detailed information on the material to be tested and may provide a fingerprint of the analyzed material.