in building water networks - ELMA-LAVAR Technology Siehe :Drinking Water Hygiene in Cooling Towers Our principles are simple and practical:- Maintain the water balance correctly - no scale, no seasonal fluctuations - no place or space for legionella.....with ELMAK Watermaster.- optimized chemistry for maximum effectiveness...with ELMAK chemicals.- maintain the water as clean as a swimming pool...with ELMAK cooling tower systems.Right: ELMAK Watermaster - VP water make-up and blowdown.Right: A clean cooling tower basin - still clean after 8 years in service.ELMAK Cooling tower modules - everything included for clean cooling tower operation. VDI 2047 conformity made easier.