Syllabus

 

Our syllabus provides insight into our standard analyses

In the syllabus you will find information about all our standard analyses. These are arranged in alphabetical order per analysis group. Also, using search filters you can search for an analysis or component. We present, among other things, the measurement principle, the analysis procedure, and the standard method. After selection of the matrix type, we present the performance characteristics for each component in the analysis that apply to this matrix. The Combi-matrix contains the performance characteristics which have been calculated on the basis of the quality checks in varying sample matrices, analyzed in daily practice. We keep the data as current as possible. If you cannot find specific information, you can always contact us, and we are happy to help.

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Additional information
In addition to the standard offer, we provide cutsom-made solutions in consultation in order to provide the best solution for your analysis problem. For additional information about rates, regulations, and performance characteristics, please contact us at 023-5175900, or at customerskontacten@hetwaterlaboratorium.nl. For an up-to-date overview of the analyses that fall under the scope of accreditation, we refer to the website of the RvA (www.rva.nl). The scope can be found under number L404.

Sampling standard reference

The syllabus contains standard references for all analyses and components. These are also stated on the analysis report. The Sampling tab contains the standard references for sampling activities that cannot always be linked directly to a specific component or analysis.

Note on statistically significant counting areas in microbiological research

Membrane filtration techniques (coli37, E. coli, enterococci, sulfite-reducing clostridia, aeromonas, Clostridium perfringens) have a statistically significant counting range between 10 and 80 colony forming units per plate. For the moulding plate method (colony number 22 °C and 37 °C) and the method for Legionella, a statistically significant counting range between 10 and 300 colony-forming units per plate applies.

  • If 0 colony forming units are reported in the examined volume, this should be interpreted as: “the micro-organism was not found in the examined volume”;
  • If 1 or 2 colony forming units are reported in the examined volume, this should be interpreted as “the micro-organism is present in the examined volume”;
  • If 3 to 9 colony forming units are reported in the examined volume, this should be interpreted as “an estimated number of colony forming units in the examined volume”.
  • The analysis report does not mention these interpretations.

If numbers are reported above the counting areas mentioned, the reported value must be regarded as indicative. However, this is stated on the report. The counting areas are in accordance with NEN-EN-ISO 8199, 2018. If the result is obtained from multiple analysis in microbiological research, the mean is used.

The current syllabus views have incorporated the changes until March 31, 2021. Current data, as well as historical data, are registered in our LIMS and are always available on request.

Click here for our syllabus in Excel format.