BTEX and MTBE
- two samples on different concentration levels
- 600 mL per sample
- concentration range: 0-25 µg/L
- In round CB09 there is the possibility to order BTEX/MTBE and VHH together at a reduced price.
- The specified standard deviations for proficiency assessment (z-score-criteria in %) and lower limits apply to synthetic samples in the year 2022
and are calculated from interlaboratory comparisons 2011-2021.
At regular intervals the standard deviations are recalculated and updated.
| Parameter |
standard deviation for proficiency assessment
based on the targed value |
Lower limit |
|---|
| Benzene |
15 % |
0.5 µg/L |
| Ethylbenzene |
17 % |
0.5 µg/L |
| Toluene |
14 % |
0.7 µg/L |
| Sum of m- and p-Xylene |
19 % |
1.4 µg/L |
| o-Xylene |
16 % |
0.5 µg/L |
| MTBE |
14 % |
0.1 µg/L |
| Round |
Dispatch |
Organisation |
Samples |
Closing date |
| B-CB09 |
03.10.2022 |
IFA |
synthetic |
28.10.2022 |
- Contact IFA:
Caroline Stadlmann, Ing.
Phone: +43(0) 1 47654 97306
The proficiency tests VHH and BTEX&MTBE in real water samples (UBA) will be offered in an alternation mode.
In 2022 VHH are offered and a proficiency test for BTEX & MTBE for real water samples (round B13) will take place in 2023.
Report design