Central Analytical Measurements Laboratory
Gas Chromatography (GC)
Definition:
A widely used spectrometric separation technique in analytical chemistry used to separate and analyze compounds that can be vaporized without decomposition.
Function:
- Analyze the composition of a specific substance.
- Separate different components of a mixture.
Sample Type:
Volatile organic compounds or thermally stable compounds.
Restrictions:
The sample must be free of water.
Zeta Potential Analyzer
Definition:
A device that uses dynamic light scattering to measure certain particle properties.
Function:
- Measures particle size and molecular size from 0.3 nm to 10 micrometers using dynamic light scattering.
- Measures zeta potential to determine particle stability and molecular weight.
Sample Type:
Solid particles or suspended materials
Freeze Dryer
Definition:
A device used in freeze-drying, a process for preserving biological materials by removing water from the sample. It involves freezing the sample first, then drying it under vacuum at very low temperatures.
Function:
Removes water from frozen samples through sublimation.
Sample Type:
Liquid or solid.
Restrictions:
The solvent must be water.
Refrigerated Centrifuge
Definition:
A device used for separation and sedimentation by applying high-speed centrifugal force (up to 15,000 rpm) with temperature control for cooling or heating samples.
Function:
Separates suspended solids from liquids or immiscible liquids.
Sample Type:
Suspended liquids or immiscible liquids.
Operating Range:
Temperature ranges from -12°C to 40°C.
Multi-parameter pH Meter
Definition:
A device that uses multiple electrodes to measure different properties. The measurements are transferred digitally to the meter, where data points can be displayed and recorded.
Function:
Measures the concentration of specific ions and pH value in samples.
Sample Type:
Liquid samples.