Stellarnet has introduced the Chemwiz analyser development kit, which enables users to perform full-spectrum chemometric analysis for multiple components.
The software toolkit, when combined with Stellarnet spectrometer instrumentation and Spectrawiz operating software, is said to enable the rapid development of complex analysers needed to provide custom measurement solutions for many applications.
Real-time spectral data is used as input to measure concentrations of up to six components such as moisture, fat, protein, alcohols, acids, or chemicals such as pesticides.
Alternatively, the Chemwiz analyser development kit can be used to classify samples, such as the types of plastic.
The toolkit includes a model builder, which is used to process spectra from a set of known component concentrations.
Spectral pre-processing techniques are selected such as multivariate scatter correction (MSC), smoothing, derivatives, and mean centring.
The multivariate analysis type is then selected, such as partial least squares (PLS).
Finally, a cross-validation technique is chosen and used to improve the reported statistics indicating accuracy and fitness of the calibration model created.
The analyser development kit includes a runtime engine that performs the analysis in real time with little or no sample preparation.
The measurement results are displayed on the Spectrawiz application panel for Chemometric Predictor, which is also provided in our Labview software program for OEM developers.
Each analyser system can be tailored with sampling accessories to measure liquids, solids and powders.
For liquids, absorbance is measured via flow cells, dip probes or cuvettes.
For solids and powders, reflectance is typically used to measure sample absorbance.
Near-infrared diode array spectrometers such as the Dwarf-Star NIR-512 with TEC cooling are typically configured for analyser development.