Chemical analyses in fresh waters at low concentration levels

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Proficiency test - chemistry

Description of the programme

This interlaboratory comparison (AGLAE's programme ‘1Ab’) in clear freshwaters, public drinking waters, spring waters and non-atypical natural mineral waters is provided in the frame of: 

  • accreditation scopes related to physico-chemical analyses in waters (check AGLAE's accreditation Cofrac No. 1-1664)
  • approvals issued by Departments of environment or Ministries of Health


This proficiency testing is identical to the test 'Chemical analyses in fresh waters' but at lower concentration levels to meet specific requirements.

Target concentration ranges available on request. 

List of parameters

Détail des paramètres mis en oeuvre

pH, conductivity at 25°C, REDOX potential, degree of hardness, total alkalinity,
NH4+, NO2-, NO3-, Na+, Ca2+, K+, Cl-, SO42-, PO43-, SiO32-, KMnO4 index,
turbidity, total organic carbon (TOC), Mg2+, F-, colour by comparison with hexachloroplatinate (without filtration), colour using (NF EN) ISO 7887 method B (without filtration)