Certificeringen

BWL 2004 02.V6     70% chemische lamellenwasser

BWL 2008.09.V6     95% chemische lamellenwasser

BWL 2006.14.V7      85% chemische combi

BWL 2010.25.V4      70% NET wasser

BWL 2010.26.V4      95% NET wasser

BWL 2007.03.V8     70% biologisch

BWL 2009.12.V4      85% biologische combi

BWL 2007.02.V6     85% biologische combi

BWL 2010.02.V6      85% biologische combi