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screen shot of Stanmod

The software package includes a modified and updated version of the CXTFIT code of Toride et al.[1995] for estimating solute transport parameters using a nonlinear least-squares parameter optimization method. This code may be used to solve the inverse problem by fitting a variety of analytical solutions of theoretical transport models, based upon the one-dimensional advection-dispersion equation (ADE), to experimental results. The program may also be used to solve the direct or forward problem to determine concentrations as a function of time and/or position.


These hydraulic properties are key parameters in any quantitative description of water flow into and through the unsaturated zone of soils. The program uses the parametric models of Brooks-Corey (1964), van Genuchten (1990), the lognormal distribution model of Kosugi (1996), and the dual-permeability model of Durner (1994)


screenshot of Hydrus software

HYDRUS is a Microsoft Windows based modelling environment for the analysis of water flow and solute transport in variably saturated porous media. The software package includes computational finite element models for simulating the two- and three-dimensional movement of water, heat, and multiple solutes in variably saturated media. The model includes a parameter optimization algorithm for inverse estimation of a variety of soil hydraulic and/or solute transport parameters.


screen shot of Meshgen

The program consists of two standard modules, the Geometry Modeller and the FE-mesh Generator, and several other customizable modules for pre- and post-processing data (defining domain properties, boundary conditions and graphical display of results).

MESHGEN Plus has been used as a base library for the development of HYDRUS 2D/3D. Currently we are finishing a new version of MESHGEN Plus that can be used either as a stand-alone application (for preparing data for other FEM programs - see Meshgen Area 2011) or for the rapid development of new FEA programs.

Pressure Membrane Extractor, 0 TO 15 bar

Pressure Membrane Extractor image

The 1000 Pressure Membrane Extractor incorporates disposable cellulose membranes in the extraction of water from soil samples over a pressure range of 0 to 15 bars. A compression diaphragm in the lid holds the samples in firm contact with the membrane, ensuring proper hydraulic contact needed for the extraction process. The Pressure Membrane Extractor includes the following components: top and bottom plates, 5/8" (1.6 cm) high by 11" (28 cm) inside diameter cylinder and clamping bolts, cylinder seal O-rings, screen drain plate, compressing diaphragm, and eccentric clamping screw assembly.

Cochem Flow

Image of Cochem Flow

Although the specialty of COCHEM Flow is in modelling wet steam flow with homogeneous and heterogeneous condensation, the program can be also used for any other general calculations of two-dimensional compressible flow, including a transonic flow with shock waves. Thanks to the flexibility and robustness of the integrated FE-mesh generator, COCHEM Flow simulations can be done in any two-dimensional domain of arbitrary shape, including turbine planar blade cascades.

Ground Conductivity Meter- EM31

Ground Conductivity Meter EM31


The EM31-MK2 maps geologic variations, groundwater contaminants, or any subsurface feature associated with changes in ground conductivity. Using a patented electromagnetic inductive technique that allows measurements without electrodes or ground contact. With this inductive method, surveys can be carried out under most geologic conditions including those of high surface resistivity such as sand, gravel, and asphalt.