Activated Sludge Monitoring

Articles & Whitepapers

  • A New Toxkit Microbiotest with the Protozoan Ciliate Tetrahymena

    A New Toxkit Microbiotest with the Protozoan Ciliate Tetrahymena

    Abstract : Culture free microbiotests with organisms from different trophic and functional levels, e.g. bacteria, algae, rotifers and crustaceans, are presently available. This paper presents the status quo and general design of a new, ready to use multi-generation microbiotest with the standard ciliate Tetrahymena, a representative from a further ecologically relevant group - the protozoa. The ...


  • WTW at IFAT 2018

    WTW at IFAT 2018

    The Wet Chemistry revolution is now Our biggest trade show highlight was the presentation of a real innovation made in Weilheim with the Alyza IQ. Our new Analyzer generation sets new standards with its revolutionary mixing unit by saving costs ...

Equipment & Solutions

  • Pulse-Flow Respirometers

    Pulse-Flow Respirometers

    When operating in the aerobic mode, oxygen – from a supply of pure oxygen – is added in small increments into each respirometer vessel in response to oxygen uptake and carbon dioxide absorption. This mode of operation maintains a constant oxygen concentration in the headspace within the reaction vessel. Oxygen transfer from the headspace to the liquid phase is accomplished by using ...