Introduction   Kenneth C. Clear, Inc. has had significant   success in the past seven years using the   three electrode linear polarization (3LP)   technique to define and monitor the rate of   corrosion of steel in concrete.   The technique is based upon the fact that   the D.C current required to alter the natural   electrical half cell potential of the steel   a few millivolts, is proportional to the natural   corrosion rate of that steel.   If a high current is required, the corrosion   rate is high; and vice versa.   The goal of the testing is most often to   predict the future durability and   maintenance requirement of a reinforced   concrete structure,   or to define the benefit of a repair   technique as a means of reducing future   expenditures for rehabilitation.
3LP Package
KCC INC 3LP Device (Model 3LP - NBSI) :
KCC INC 3LP Instruction Manual which includes the Measuring Rate of Corrosion Paper :
Complete portable probe set up with sufficient cable to allow about 19 feet between    the portable probe and the rebar ground connection :
AC cable for recharging battery :
Pencil cell (copper-copper sulphate) :
Vice grip with banana pin connection :
Screwdriver for zero adjust :
Software package for use on IBM PC's :