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 (iis09C14) of this Proficiency Test on Isopropanol   

For viewing the report you will need Adobe Acrobat Reader

Summary of this proficiency test:

On 15 February 2010, the proficiency test on  Isopropanol   (iis09C14) was finished. It started on 4 November 2009 (see message “Proficiency Test on Isopropanol  started” on this website) when the samples were distributed.

In this international interlaboratory study 16 participants in 13 different countries have participated.

The samples were tested on: Acidity, Appearance, Specific Gravity20/20°C, Density@20°C, Chloride, Colour, Distillation, Nonvolatile matter, Water, Peroxide as O and GC analysis.

The proficiency test report summarises per test, the test results, the analytical methods reported by the participants and the z-scores calculated by i.i.s. for each participant are tabulated. Also, for each test, 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).

Interested parties can order a hard copy of the report; the price for non-participants is Euro 35.