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Crucibles serve as containers for samples during thermoanalytical measurements. They guarantee that the sensor is not contaminated by the measurement. The type of crucible used for a DSC or TGA measurement can have a large effect on the quality of the results obtained, and in addition, also influences important characteristics of the measuring cell (e.g. resolution and sensitivity). Considering the relevant factors before the measurement can often help to save time later on when interpreting the curve.
The wide range of crucibles and accessories ensure that you always can choose the right crucible for a particular application.
Precisely machined aluminum crucibles with strong and flat crucible bases guarantee excellent thermal contact between the crucible and the sensor and ensure low temperature gradients.
Reusable alumina (aluminum oxide) crucibles of various volumes are available for TGA measurements up to 1600 °C.
PCA, or polycrystalline alumina oxide, is a material with properties similar to sapphire. Thanks to its structure, PCA is very tight, chemically resistant, and inert.
Platinum crucibles are mainly used for TGA measurements up to 1600 °C. It is the preferred crucible for Cp determination at high temperatures.
Compared with standard DSC aluminum crucibles, sealed gold or gold plated crucibles are far more chemically inert.
Glass is an inert material and can be hermetically sealed.
The High Pressure DSC crucibles withstand pressures of up to 15 MPa. Steel and gold-plated crucibles are frequently used in safety investigations.
Copper pans are almost exclusively used for the determination of oxidation induction times (OIT). Copper exerts a catalytic effect.