It may not be used for the testing explosive samples. The gross calorific c value is determined according to an isoperibolic measurement procedure at 22°C (optional 30°C). The combustion of the sample takes place in a closed vessel with oxygen excess. The temperature rise of the static jacket filled with water will be measured. The sample amount is dependent on the combustibility of the substance. The temperature increase during the combustion has to be between 1 K and 10 K (40 000J). For most samples it is necessary to use about 0.5 g to 1 g per measurement.
Transient experiments can be conducted with a pulse device. See alsoTG FTIR
The GC is used for analyzing hydrocarbons, hydrogen, carbon monoxide, carbon dioxide, nitrogen, oxygen and methane.
FID (Flame Ionisation Detector)
TCD (Thermal Conductivity Detector)
CHNS elemental analyzer
GPC is a chromatographic method for the determination of molecular weight distributions of polymers and oligomers. The macromolecules are separated on a column according to their volume and their retention time is determined. The molecular weight corresponding to a certain retention time can be determined using polymer standards with known molecular weight. For our biomass related research dimethylsulfoxide (DMSO) is used as eluent and a UV detector for detection of the macromolecule fractions
Karl Fischer Titration
- Spectral range: 900 - 1700 nm
- Detector: Indium Gallium Arsenide
- Array format: 320 x 256
- Pixel: 30 x 30 microns
- Frame rate: 30 Hz
- Temperature range: 20 - 1200°C
(courtesy of Prof. Ph. Rudolf von Rohr, ETHZ)