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Excel spreadsheet for Codex method criteria

As an alternative to specifying analytical methods in Codex Standards, Codex has adopted method criteria, i.e. Codex has a set of method performance characteristics for which there have been established numeric values. The laboratories can choose which method to use as long as the criteria are fulfilled. The method criteria are calculated based on the ML (maximum level) and the Horwitz' ratio. This Excel spreadsheet calculate the values for you.


Excel spreadsheets related to specific NMKL procedures (free downloading)

NMKL procedure No. 4, 3. Ed., 2009:  Validation of chemical analytical


NMKL procedure No. 5, 2. Ed. 2003: Estimation and expression of measurement uncertainty in chemical analysis


 NMKL procedure No. 8, 4. Ed. 2008: Measurement of uncertainty in quantitative microbiological examination of foods

  • Prosedyre 8 Attachment (attached as a PDF file; please contact us at This email address is being protected from spambots. You need JavaScript enabled to view it. if you wish an Excel file)


NMKL procedure No. 20, 2007 Evaluation of results from qualitative methods



NordVal International

NordVal International is an independent third party that evaluates the quality characteristics and applications of alternative chemical and microbiological methods in the analysis of food, water, feed and environmental samples.

Go to NordVal



NMKL offers different subscriptions; procedures and methods might be downloaded from this website or be forwarded as PDF-files by email. NMKL subscriptions can be paid by credit card or by invoice.




The methods are in either Danish, Swedish or Norwegian combined with English. Most methods are also available in a Finnish/English version. All methods are in the PDF format and can be downloaded or forwarded by email. 

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