Metrohm Vision Manual - Manual (Page 122)

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11. Qualification method threshold.
12. Qualification method symbol and the threshold type symbol. The following symbols are used:
• WD - maximum wavelength distance
• WC - wavelength correlation
• MD - Mahalanobis distance
• RV - Residual Variance
• PL - probability level
• MV - match value
Each sample is passed through the following sequence: clustering, identification, and qualification. If
a given stage of this sequence does not have a method created, Vision bypasses this step (N/A
appears on the report). If a sample fails at any stage, the consecutive steps are not executed (N/A
appears on the report).
The nomenclature used in the validation is complicated and needs closer description:
1. Samples that did not pass clustering method show FAIL CLUSTERING result.
2. Sample that can be uniquely identified and/or qualified, show PASS in the result column.
3. Samples that can not be identified and/or qualified to the proper product show FAIL result.
4. Multiple lines with asterisks designate an ambiguous sample, i.e., a sample that was identified
to more than one product. In this case Vision will try to qualify the sample using qual methods
of all identified products. If the sample qualifies as the correct product, it is flagged as PASS. If
the library does not have qualification methods, or is qualified to more than one product, the
sample remains flagged as AMBIGUOUS.
5. MISMATCH means that the sample was identified or qualified to a wrong product.
6. NO MATCH means that the sample was not identified or qualified to any product in the
library.
4.7.5 Copying Methods Between Libraries
Library identification and qualifications methods can be copied between libraries. To copy methods,
enter the Qual Identify development mode. Select the library which methods need to be copied and
click on Edit/Copy All Methods to Library. Select the destination library. The following rules apply:
• Library has to be internally validated to copy methods.
• All existing source library methods (ID and qual) are copied.
• A qualification method in the destination library will be overwritten if the product it is
attached to exists in the source library.
• Qualification methods in the destination library attached to products that do not exist in the
source library will not be overwritten.
• Qualification methods in the destination library attached to products that do not exist in the
source library will not be overwritten.