Mark Westerhaus
An ever-increasing number of NIR-instruments in the field, operated both by experts and routine operators, sets requirements for network operation to enable efficient monitoring, service and evaluation. The increase in connection bandwidth across many countries of the world gives the opportunity to move away from dial-up based modem solutions to solutions where data can be exchanged practically seamlessly both upstream and downstream, allowing for swift and accuracy response from the network administration.
In the first part of the pre-conference course ‘Instrument networking and WinISI training’ at NIR2011, aspects of instrument network capabilities will be demonstrated in a hands-on fashion using FOSS’ latest network software, Mosaic. The network features will be viewed both from a user’s perspective and a network administrator’s perspective, using recently released FOSS NIR instruments. Problem-based scenarios investigated will include:
- Network assisted instrument installation and setup
- Calibration distribution across different instrument groups
- Instrument result verification and calibration adjustment
- Instrument diagnostic review and troubleshooting
In the second part of the course, WinISI will be used to explore several aspects of
Carl Janson
developing and maintaining NIR calibrations. Actual datasets will be used to demonstrate the importance of the following:
- Defining your product and knowing you laboratory error
- Deciding which samples should represent your product
- Adding additional variation with a repeatability file
- Using graphics to identify potential problems in your dataset
- Cleaning the dataset to remove obvious mistakes
- Picking the best pretreatment of the spectra
- Finding the best level of model complexity through cross validation and external validation
- Using the best calibration method
- Identifying and eliminating outliers
- Using the Global and Neighbor H statistics with routine analyses
- Monitoring routine analyses to guide model updates and maintain prediction accuracy
- Using product discrimination to confirm product identity
Attendance to the course is free as it will be sponsored by FOSS. Please visit the NIR 2011 website (www.nir2011.org) to register for this course.
Carl Janson, FOSS Analytical, Denmark and Mark Westerhaus, Foss Analytical A/S, United States of America
