Parameter | standard deviation for proficiency assessment based on the target value |
Lower limit |
---|---|---|
Benzene | 14 % | 0.5 µg/L |
Ethylbenzene | 16 % | 0.5 µg/L |
Toluene | 14 % | 0.7 µg/L |
Sum of m- and p-Xylene | 19 % | 1.4 µg/L |
o-Xylene | 15 % | 0.5 µg/L |
MTBE | 14 % | 0.1 µg/L |
Round | Registration deadline | Dispatch | Organisation | Samples | Closing date |
---|---|---|---|---|---|
B-CB11 | 30.09.2024 *) | 14.10.2024 | IFA | synthetic | 15.11.2024 |
The proficiency tests VHH and BTEX&MTBE in real water samples (UBA) will be offered in an alternation mode.
In 2024 VHH are offered and a proficiency test for BTEX & MTBE for real water samples will take place in 2025.