passive diffusion tube News

  • AQMesh can also be scaled using diffusion tubes

    The AQMesh team has carried out a test which shows that calibration (scaling) of AQMesh against one, or ideally several, diffusion tubes, is a viable option when no local reference station is available. When three AQMesh pods and four NO2 diffusion tubes were co-located against a reference station, the diffusion tube readings were so consistent with the reference average reading for the period ...

    By AQMesh

  • Fast uptake Nitrogen dioxide and VOC monitoring using passive sampling techniques - Rapid Air Monitors

    Leading supplier of air pollution monitoring equipment, Gradko Environmental, is pleased to announce the first products in its new range of Rapid Air Monitors. Environmental consultants globally have been looking for faster passive methods of measuring ambient air pollution, particularly for inorganic compounds. Gradko have responded to this market need with the introduction of the Rapid Air ...

    By Gradko International Ltd

  • Waterloo Emitter™

    The Waterloo Emitter is a simple, low cost device designed for the controlled and uniform release of oxygen, or other bioenhancing amendments, to encourage and sustain the growth of microorganisms required for in-situ bioremediation of contaminated groundwater. The patented technology* enables steady, direct diffusion of oxygen into an aquifer through pressurized silicone or LDPE tubing. ...

    By Solinst Canada Ltd.

  • Gradko Attending the Air Quality and Emissions Show 2013

    Gradko will be attending the AQE 2013 show in Telford on 13-14th March. This years show is an expansion of the usual MCERTS exhibition to include all aspects of air quality monitoring, allowing visitors to see all the latest technology at one event. We will be exhibiting our full range of diffusion tubes for monitoring of VOCs, NO2, NOx, O3, SO2, Acid ...

    By Gradko International Ltd

  • AQMesh can complement air quality models, reference and indicative data sources

    Leading air quality small sensor system, AQMesh, has recently been shown to work alongside passive samplers and air quality models, as well as complementing reference station networks. A recent study shows AQMesh calibration against diffusion tubes and two 2017 conferences have highlighted the potential of such systems used in an air quality network. At the Dispersion Modellers User Group Meeting ...

    By AQMesh

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