Our firm do provide Soil Resistivity Survey for clients who wish to get quick information on the substrata of a land area.  Resistivity method is an electrical geophysical imaging method to measure subsurface apparent resistance distribution by injecting DC current into the ground using 2 current electrodes (C1 and C2). A potential difference is measured using 2 potential electrodes (P1 and P2). Electrical imaging system is now mainly carried out with a multi- electrode resistivity meter system. Such surveys use a number (usually 25 to 100) of electrodes laid out in a straight line with a constant spacing. A computer- controlled system is then used to
automatically select the active electrodes for each measure (Griffith and Barker, 1993).

Resistivity imaging is an inverted model of hundreds to thousands of four electrodes resistivity measurement. Hundreds of measurements of a site are required to produce a 2-D imaging model of the subsurface. A resistivity imaging is taken using an acquisition algorithm that collect data from a series of electrodes placed either on the surface or located in boreholes. Two-dimensional data are collected using linear array of electrodes. The image is developed using an inversion algorithm. The inversion algorithm uses the collected apparent resistivity data to create a model space of resistivity value that would replicate the collected data.