Caltest Definitions

Home Documents Wet Lab Referencing Purpose: The installation of the framework of beginning statistics known as the baseline, from which all analysis results that follow will be compared. Process: Analysis results of a ten, discrete-sample, blind-duplicate study are processed to determine the precision of the reference method and instrumental method, and the accuracy of the instrumental method. Usage: Used as a measure of performance for the instrumental method. Resulting data can also be used as part of a calibration development, or expansion program, to make an existing, or new calibration increasingly robust. Caltest Sentinel Purpose: To continually monitor and communicate the performance of the instrumental method. Process: Diagnostics, check-sample, and daily sample analyses results are recorded. Usage: Analysis data monitoring is used to determine point at which a new, or expanded calibration may be needed. Diagnostics and check-sample monitoring are used to warn the operator of a marginally performing instrument. Data Analysis Troubleshooting & Remediation Purpose: To determine the causes of error in a data set and attempt to remove them before certification. Process: Analysis results of blind duplicate samples are analyzed for fit to the certification sample population. Removal from the certification sample population is performed and the resulting data is reprocessed for linearity. In addition, sample collection and preparation procedures are examined and alterations suggested. Usage: To prevent the introduction of errant results to the Certification Sample Population so as to allow for the reporting of the true of the analytical system in use. Activity: Assist customer in identifying errant data.   Train and assist customer in numbering procedures for future NIR certification sample number entries.   Correct errant sample numbers.   Remove samples either missing spectra, wet laboratory reference data, or both.   Assist customer in locating certification sample data in customer’s computer.   Correct errant wet laboratory reference data.   Correct errant data submitted for analysis. Calibration Development (CalGen Process) Purpose: The development of starter calibration equations based on limited laboratory analysis. The CalGen Process is designed to reduce the amount of chemistry that is usually needed before using the NIR to obtain results for a new product or constituent. Process: Caltest is provided with spectra from as many samples of the product as possible. Caltest Certification Check Sample results and any other available chemistry are combined with these samples to develop the starter calibration. Usage: Allows the subscriber a quicker start-up in NIR analysis for new products and constituents while the subscriber continues to acquire new data and chemistry Back to top Copyright Caltest, LLC 1999 All right reserved. Home