LOGO2 Bridge & OPAMP

    ENZYME ASSAYS - MEASURED BY CHANGES IN SOLUTION CONDUCTIVITY

 

Simple, Sensitive, Low Cost (ca. £200) &  Reliable

 

                     EASY TO BUILD

 

Can be used for: Blood & Urine Clinical Tests, Industrial,

                 College & School projects

 

Uses two low cost electrochemical cells (Sample & Reference) in an ac bridge for extra differential sensitivity

 

The simple bridge circuit & the apparatus are shown below

Photo 1 whole setup

Links are in blue & underlined