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</html><thumbnail_url/><thumbnail_width/><thumbnail_height/><description>GELUID TEGEN LEGIONELLA Het bedrijf Aqua-D&amp;S is sinds kort actief op de markt met een ultrasoon techniek als een &#x2018;point of entry&#x2019; systeem in leidingwaterinstallaties. De techniek is vooral bekend van andere toepassingen, maar nog niet voor legionellabestrijding, waarvoor dit systeem is ontwikkeld. Ultrasoon geluid is onhoorbaar geluid met een frequentie hoger dan 20 kHz [&hellip;]</description></oembed>
