In studies of the transport in porous materials it is important to measure concentration profiles of moisture and ions non-destructively. Nuclear Magnetic Resonance (NMR) is a powerful technique to measure the time evolution of e.g. moisture profiles with a high spatial resolution. However, many technological porous materials contain large amounts of para-magnetic ions, which complicates the NMR measurements. Therefore the moisture transport is studied using specially developed NMR scanners which  have the possibility to measure quantitative using a Faraday shield. Here a short overview is give of the instruments and the main characteristics

     4.7T - 200 Mhz
    digital NMR (Spincore based)
    1D,  grad 0.6 T/m max grad
     H, Li, Na, Cl  imaging