ENZYME ASSAYS - MEASURED BY CHANGES IN SOLUTION CONDUCTIVITY
Simple, Sensitive, Low Cost (ca. £200) & Reliable
PCB available soon
[It takes longer than I expected to design and implement an effective PCB - I am just starting the second design cycle which will require another fabrication etc. It will be worth it in the end!!]
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
SERIOUS ERROR!!! The prerviously presented circuit for the Precision Rectifier showed the feedback resistor for the final amplifier connected to the non-inverting (positive sign) input. This is incorrect it should be connected to the inverting input negative sign. A corrected circuit is now shown. Apologies to anyone who has been troubled by this long-standing error. Of course my own circuit has been connected correctly it was a typographical error!
ULTS
GO TO RESULTS GO TO INTRO BASIC GO TO INTRO SPECIFIC
Links are in BLUE & underlined