Interlaboratory comparison 09/2017 - VOC measurement from indoor air samples

Proftest SYKE carried out the interlaboratory comparison for TVOC thermodesorption measurements (ISO 16000-6) from native indoor air samples in Tenax TA thermodesorption tubes (IDA 09/17) in October-November 2017. 2EH (2-ethyl-1-hexanol), naphthalene, styrene, toluene, and TXIB (2,2,4-trimethyl-1,3-pentanediol diisobutyrate) measurements were also tested with synthetic sample. In total 10 participants took part in the intercomparison. In total 68 % of the participants reported satisfactory results, when deviation of 20–30 % from the assigned value was accepted. The calculated values were used as the assigned values for the synthetic sample for the results reported as compound specific responses. For the other measurands and samples the average of the results of the homogeneity measurements and the test results of the expert laboratory were used as the assigned value. The evaluation was based on the z scores. Warm thanks to all the participants of this interlaboratory comparison