Interlaboratory Comparisons,
Proficiency Tests


intro blabla ...
The following data treaments are provided:

  • Horwitz equation (LINK-A)
  • Homogeneity (LINK-B);
  • Stability (pending);
  • PT evaluation (LINK-D); and
  • the Naji2 Plot (pending)

For more information:
Consult the guidance documents and leaflets available from


The information above is provided "as is" without warranty of any kind, either express or implied, including, but not limited to, fitness for a particular purpose and absence of errors in the application. The entire risk as to the use, quality, and performance of the application is with the user. The owner of these Tools will not be liable for any incidental, consequential, direct or indirect damages including but not limited to the loss of data, loss of profits, or any other financial loss arising from the use or inability to use the application provided.