Test details

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WW 11/2025 - Wastewater analyses II

Proftest Syke will organise a proficiency test (PT) for the analysis of chloride, colour, conductivity, nutrients (N_NH4, N_NO2+NO3, N_tot, P_PO4, P_tot), pH, and sulphate in wastewaters.

The purpose of this proficiency test is to ensure the comparability and accuracy of the results of the participants. About 50 laboratories are expected to participate in this proficiency test. The measurands and samples of this proficiency test are included in the Water chemistry scheme of the Proftest Syke accreditation scope (finas.fi/sites/en).

Registration deadline is on 27 October 2025.

Sample dispatch date is 25 November 2025.

The final report for the proficiency test will be published in June 2026.

Test

TestWW 11/2025
NameWastewater analyses II
Ordering9/29/2025 – 10/27/2025
Samples delivery11/25/2025
Result form open11/26/2025 – 12/8/2025

Files

File	Modified	Size
WW 11-2025 Infoletter_en.pdf	9/29/2025 9:46 AM	475 kB

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Instructions

On this page we inform the important dates for the current proficiency testing scheme. You find information about the time frame for registration, the sample delivery date¹ as well as the schedule according to which the participants should report their results via this user interface.

You may place an order by selecting Create order from the left side bar or from the bottom of the page.

Information letter for the proficiency testing scheme is available on this page, in the FILES section.

¹⁾The sample delivery date indicates the date we send the samples to national participants. For international participants the sample delivery depends on the destination. The aim is to deliver the samples so that they arrive at the same time than for the national participants.

Proftest Syke does not take responsibility for delivery delays but possible actions needed due to delays will be taken into consideration case-specifically. The participant is responsible for possible clearance or customs fee of the samples.