Proficiency tests for environmental and water laboratories.

Autumn 2018


Ion Balance

Colour (Hazen), colour (absorbance), conductivity, pH, turbidity, alkalinity, Ca+Mg, hardness (dH), Ca, K, Mg, Na, chloride, fluoride, sulphate, sum anions, sum cations, CODMn, TOC

Part A: Potable recipient
Part B: Humic recipient
Part C: Chlorophyll

  • Dispatch: September 3
  • Analysis: September 6
  • Reporting deadline: September 26



BOD7, CODCr, CODMn, TOC, Na, Conductivity, pH, Alkalinity

Part A: Municipal wastewater, treated

BOD7, CODCr, TOC, Na, Conductivity, pH, Alkalinity, Ntot, Ptot

Part B: Paper industry wastewater, treated


Part C: Paper industry wastewater

Documents (in Swedish only)
  • Dispatch: September 24
  • Analysis: September 27
  • Reporting deadline: October 17

September 24, 2018 The samples are dispatched. Get your parcel-ID to trace your delivery.

Proficiency Tests 2018

Information och program (pdf)

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