LOGO2 Photo 1 whole setup Bridge & OPAMP

ENZYME ASSAYS - easily 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 [see APPLICATIONS]

 

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

Links are in BLUE & underlined

 

 

The apparatus - insulated box lid removed..

                          seen behind