Thermo-Fisher model iCAP 6300 radial view ICP-OES Spectro model Genesis radial view ICP-OES CEM MDS-2100 microwave system Lachat 8000 Ion Analyzer O.I. Alpkem A/E ion analyzer Dionex 2000i/SP ion chromatograph Leco Tru-Mac CN AIM600 Digestion System Eijkelkamp aggregate stability apparatus (wet sieving) Perkin Elmer FIMS 100 Mercury Analysis System Labfit Dual-Probe Automated pH System