1. Krüger A/S, Veolia Water Technologies, Gladsaxevej 363, 2860 Søborg, Denmark
2. Department of Environmental Engineering (DTU Environment), Technical University of Denmark, Building 115, 2800 Kongens Lyngby, Denmark
3. BIOFOS A/S, Refshalevej 250, 1432 København K, Denmark
4. Aarhus Vand A/S, Gunnar Clausens Vej 34, 8260 Viby J, Denmark