Water testing laboratory

Recently I bought some material for water treatment at home and the topic of analysis came up. They said if I bring them 2 liters they will do multiple analysis for free, probably because I wan a client; I doubt they do it free for everyone. Call them and ask. They are located in Zaventem and they speakEnglish, but I think they have other locations. 02 711 57 57 http://www.vanmarcke.com/fr-be