Customize your participation and only pay for parameters you need!
Interlaboratory proficiency testing schemes
Customize your participation, choosing the measurands in the matrix of your interest
and the period in which you want to participate.
ONLY PAY FOR PARAMETERS YOU NEED!
Interlaboratory proficiency testing schemes organized in accordance with the standard ISO/IEC 17043:2023 - Conformity assessment — General requirements for the competence of proficiency testing providers
Major Components
Microbiology
Metals
Organic Compounds
Application Form 2026 - REQUEST A QUOTE NOW!
Distribution Schedule – Qualitycheck 2026
Interlaboratory Proficiency Testing Schemes
Round February 2026: 02/Feb. - 16/Mar.
Final Reports in the Customer Area
Chemical & Physical-chemical parameters in natural waters
Chemical & Physical-chemical parameters in wastewater
Round March 2026: 23/Feb. - 07/Apr.
Final Reports in the Customer Area
Metals in natural waters
Metals in wastewater
Metals in sewage sludge
Round April 2026: 16/Mar. - 27/Apr.
Final Reports: 27/04/2026
Pesticides in natural waters
Polycyclic Aromatic Hydrocarbons (PAHs) in natural waters
Round May 2026: 11/May - 22/Jun.
Registration Deadline: 24/04/2026
Chemical & Physical-chemical parameters in wastewater
Round September 2026: 21/Sep. - 02/Nov.
Registration Deadline: 04/09/2026
Chemical & Physical-chemical parameters in natural waters
Chemical & Physical-chemical parameters in wastewater
Round October 2026: 12/Oct. - 23/Nov.
Registration Deadline: 25/09/2026
Metals in natural waters
Metals in wastewater
Metals in sewage sludge
Metals in contaminated soils
Round November 2026: 02/Nov. - 15/Dec.
Registration Deadline: 16/10/2026
Pesticides in natural waters
Polycyclic Aromatic Hydrocarbons (PAHs) in natural waters
Volatile Organic Compounds (VOCs) in natural waters
- Application Form 2026 - REQUEST A QUOTE NOW!
Customize your participation and only pay for parameters you need!
