Proficiency testing programs
PTS 34c : Fresh waters - Chlorophyll A, Pheopigment index
Details of the program
PTS created in 2016
ISO/IEC 17043 accredited by COFRAC
29 registered laboratories from 7 countries
Schedule
Sending date
Registration deadline
Code
Matrix
Weight
Accredited
Details
2025/09/23
2025/09/08
4234
Surface water Chlorophyll
1 l
23/09/2025 00:00:00
23/09/2025 00:00:00
23/09/2025 00:00:00
2026/01/20
2026/01/05
4234
Surface water Chlorophyll
1 l
20/01/2026 00:00:00
20/01/2026 00:00:00
20/01/2026 00:00:00
2026/03/17
2026/03/02
4234
Surface water Chlorophyll
1 l
17/03/2026 00:00:00
17/03/2026 00:00:00
17/03/2026 00:00:00
Shipment information
Samples sent by express carrier
DAP Incoterm
Delivery of samples in Europe + USA at D+1
Other countries between D+2 and D+5
Samples marked with
are sent frozen / refrigerated
Matrices and analytes may be changed or removed for technical or scientific reasons.
Some samples are sent frozen / refrigerated