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Certificates in English - VKI Reference Materials

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Certificates for the current batch of each material can be downloaded from this page.

Total organic carbon for water analysis
Major Components in drinking water
QC Endocrine Disruptors in Municipal Sludge
Organic material
QC Loam Soil B
Trace elements/metals in soil
Metals
QC Metal HL2
Metals in water
QC Metal LL1
Trace elements/metals
QC Metal LL2
Trace elements/metals
QC Metal LL3
Mercury
QC Metal LL3A
Mercury
QC Organic Components in Municipal Sludge
Organic material
QC RW1
Nutrients in recipient water
QC RW2
Total nitrogen and total phosphorus in recipient water
QC Sewage Sludge B
Trace elements/metals in sewage sludge
QC SW3.1B
Nutrients in natural coastal/estuarine water
QC SW3.2B
Nutrients in natural coastal/estuarine water
QC SW4.1B
Nutrients in natural seawater
QC SW4.2B
Nutrients in natural seawater
QC WW1B
Nutrients for water analysis
QC WW2.1
Ammonium and orthophosphate for water analysis
QC WW2.2
Nitrate for water analysis
QC WW3
Nutrients for water analysis
QC WW4
Chemical oxygen demand with dichromate (CODCr) and total organic carbon (TOC/NVOC)
QC WW4A
Chemical oxygen demand with dichromate (CODCr) and total organic carbon (TOC/NVOC)
QC WW5
Biochemical oxygen demand (BOD)
QC WW6
Suspended solids (SS)