ENVIRONMENTAL WASTE WATER CHEMISTRY

The test materials supplied are standard concentrates or standard solutions. All Groups, except 2 & 4 require dilution with your laboratory's reagent water before analysis. Full instructions regarding this dilution step will be provided. When diluted the test materials will contain levels of contaminants usually, found in waste water / effluent samples. The volume of concentrate supplied, required dilution, and description of each analyte group is shown on pages 22-24 of the Water and Environmental Proficiency Testing brochure.



Nutrients
Nutrients
Distribution Date: 10/14/2025
Residues
Residues
Distribution Date: 10/14/2025
Oxygen Demand
Oxygen Demand
Distribution Date: 10/14/2025
Toxic Metals (in 0.5% Nitric Acid)
Toxic Metals (in 0.5% Nitric Acid)
Distribution Date: 01/20/2026
Metals (in 0.5% Nitric Acid)
Metals (in 0.5% Nitric Acid)
Distribution Date: 01/20/2026
Routine Components
Routine Components
Distribution Date: 01/20/2026
Major Inorganic Components
Major Inorganic Components
Distribution Date: 01/20/2026
Oil & Grease (n-Hexane Extractable Material)
Oil & Grease (n-Hexane Extractable Material)
Distribution Date: 02/11/2026
Minerals
Minerals
Distribution Date: 02/11/2026
Trace Metals 1
Trace Metals 1
Distribution Date: 02/11/2026
Trace Metals 2 , (in 5% Nitric Acid)
Trace Metals 2 , (in 5% Nitric Acid)
Distribution Date: 02/11/2026
Nutrients
Nutrients
Distribution Date: 02/11/2026
pH & Electrical Conductivity
pH & Electrical Conductivity
Distribution Date: 02/11/2026
Residues
Residues
Distribution Date: 02/11/2026
Oxygen Demand
Oxygen Demand
Distribution Date: 02/11/2026
Pesticide Residues (soil)
Pesticide Residues (soil)
Distribution Date: 02/20/2026
Pharmaceuticals
Pharmaceuticals
Distribution Date: 03/03/2026


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