Proficiency Test on
Phthalates in Plastics finished
The full report can be downloaded (as .pdf-file). To download the report, please click the right mouse button and choose the "save as" option. Download the report (iis11P01) of this Proficiency Test on Phthalates in Plastics For viewing the report you will need Adobe Acrobat Reader
Summary of this proficiency test: On 5 May 2011, the proficiency test on Phthalates in Plastics (iis11P01) was finished. It started on 16 February 2011 (see message “Proficiency Test on Phthalates in Plastics started” on this website) when the samples were distributed. In this interlaboratory study 124 laboratories in 29 different countries have participated.
The participants were requested to determine a number of
individual phthalates (DINP, DBP, BBP, DIDP, DNOP, DEHP,
DHP and other Phthalates)
The proficiency test report summarises per phthalate, the
test results, the analytical methods reported by the participants and the
z-scores for each participant are tabulated. Also, for
each phthalate, the calculated summary (e.g. mean, standard deviation and
reproducibility) is given. In the report also an evaluation of the test results is
given. Problems encountered in the analyses are mentioned and - where
possible - suggestions for quality improvement are formulated. For each test
a comparison is made between the results of the group of participants and
the requirements given by the relevant standard (e.g. ISO, DIN, ASTM).
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