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Bridge & OPAMP

ENZYME ASSAYS - MEASURED BY CHANGES      

             IN SOLUTION CONDUCTIVITY

 

 

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

 

                                 EASY TO BUILD (DIY)

 

                     

 

    Applicable 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.

 

                     A PCB will be available soon.

Photo 1 whole setup

LINKS ARE BLUE AND UNDERLINED

Readers who have experience of conductivity and enzymes may wish to skip the Basic Introduction and proceed directly to the Specific Introduction

 

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