Registration for PT round PT 5/16 - TW S2 unfortunately is not possible any more.
Dear Customer,
the registration period for this PT round unfortunately has expired. In urgent cases please contact us by e-mail directly on info@aqsbw.de.
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News
PT schedule 2023
30.11.2022
New EXCEL-Workbook for the estimation of measurement uncertainty arising from sampling
04.03.2020
This and more helpful freeware programmes are available 
here (NEW)
Announcements
PT 6/23 TW O1 PT 6/23 - TW O1 - pesticides with GC/MS or HPLC/UV
announcementonline registrationReports
PT 6/22 TW A5 PT 6/22 - TW A5 - other inorganic parameters in drinking water
reportPT 4/22 TW S1 PT 4/22 - TW S1 - sweeteners and benzotriazoles in drinking water
reportPT 3/22 PT 3/22 - BTXE/VOC in waste water in Abwasser
report