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  • Type of Testing: Chemical-physical
Name Planned shipping method Start Date  
Drinking water - 1,2,4-triazole
Parameters (quantitative): 1,2,4-triazole (CAS 288-88-0) [µg/l]
Article Number: 2011380
Category: chemical-physical testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
New proficiency testing
Refrigerated shipping November 2026 Add to cart
Drinking water - 1,2,4-triazole
Article Number: 2011380
November 2027 Add to cart
Drinking water - contaminants
Parameters (quantitative): bisphenol A (CAS 80-05-7) [µg/l], epichlorhydrin (CAS 106-89-8) [µg/l], acrylamide (CAS 79-06-1) [µg/l]
Article Number: 2011381
Category: chemical-physical testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
New proficiency testing
Refrigerated shipping November 2026 Add to cart
Drinking water - contaminants
Article Number: 2011381
November 2027 Add to cart
Drinking water - pH, conductivity (ISO 10523, ISO 7888)
Parameters (quantitative): pH value [-], electrical conductivity [mS/m]
Article Number: 2011379
Category: chemical-physical testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
New proficiency testing
Shipping at room temperature December 2026 Add to cart
Drinking water - pH, conductivity (ISO 10523, ISO 7888)
Article Number: 2011379
December 2027 Add to cart
Microplastic – particle number
Parameters (quantitative): particle number [particle number / g]
Article Number: 2010395
Description: These are artificial samples that can contain particles and fibres in the range of 200 µm to 600 µm.
Category: chemical-physical testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
Refrigerated shipping December 2026 Add to cart
Microplastic – particle number
Article Number: 2010395
December 2027 Add to cart
PFAS in drinking water
Parameters (quantitative): total perfluorooctanesulfonic acid (CAS 1763-23-1) [ng/l], total perfluorooctanoic acid (CAS 335-67-1) [ng/l], total perfluorononanoic acid (CAS 375-95-1) [ng/l], total perfluorohexane sulfonic acid (CAS 355-46-4) [ng/l], total perfluorobutanoic acid (CAS 375-22-4) 1 [ng/l], total perfluoropentanoic acid (CAS 2706-90-3) 1 [ng/l], total perfluorohexanoic acid (CAS 307-24-4) 1 [ng/l], total perfluoroheptanoic acid (CAS 375-85-9) 1 [ng/l], total perfluorodecanoic acid (CAS 335-76-2) 1 [ng/l], total perfluorundecanoic acid (CAS 2058-94-8) 1 [ng/l], total perfluorododecanoic acid (CAS 307-55-1) 1 [ng/l], total perfluorotridecanoic acid (CAS 72629-94-8) 1 [ng/l], total perfluorobutane sulfonic acid (CAS 375-73-5) 1 [ng/l], total perfluoropentane sulfonic acid (CAS 2706-91-4) 1 [ng/l], total perfluoroheptane sulfonic acid (CAS 375-92-8) 1 [ng/l], total perfluorononane sulfonic acid (CAS 68259-12-1) 1 [ng/l], total perfluorodecane sulfonic acid (CAS 335-77-3) 1 [ng/l], total perfluoroundecane sulfonic acid (CAS 749786-16-1) 1 [ng/l], total perfluorododecane sulfonic acid (CAS 79780-39-5) 1 [ng/l], total perfluorotridecane sulfonic acid (CAS 791563-89-8) 1 [ng/l]
Article Number: 2011123
Description: In each case, the sum of linear and branched isomers of PFOS, PFOA, PFNA and PFHxS is queried. The concentration of per- and polyfluorinated substances (PFAS) is in the ng/kg range.
Category: chemical-physical testing Environmental analytics drinking water
Accreditation: This proficiency test is not included in the scope of the accreditation.
New parameter selection
Frozen shipping September 2026 Add to cart
PFAS in drinking water
Article Number: 2011123
September 2027 Add to cart
1 Parameters with this label depend on the number of participants and/or the choice of materials.
Under certain circumstances, this parameter may not be available in the proficiency test.