Investigating The Effect Of Protein Adsorption And Thrombus Formation On A Ph Essay
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PH sensors are used in many scientific laboratories to measure the hydrogen-ion concentration of a liquid substance and to determine the basicity and acidity of a liquid. PH meters measure the electrical potential difference between a reference electrode probe and a pH electrode probe. Since these probes are very sensitive, they are required to be kept cleansed from contaminants. If exposed to contamination, one risks faulty or unreliable data, since their accuracy is dependent on a regular calibration and upkeep. To avoid this risk, and accurately measure hydrogen-ion concentration, the probes are kept in a buffer solution and calibrated before each use. 
The purpose of this experiment was to investigate the effect of protein adsorption and thrombus formation on a pH sensor in regards to its function and accuracy.  Different solutions of pH were first measured with a clean, calibrated sensor. Then measured again after the same sensor was exposed to a blood solution.
Blood is a non-newtonian fluid that contains many components. One such component is red blood cells. Due to the red blood cells having the tendency to clump together at low velocities, calcium chloride was added in order to cause a thrombus formation. The blood used in their experiment was sheep’s blood.
The absorption of proteins as well as thrombus formation on the pH sensors has been known to cause negative effects. They alter function and accuracy of the sensors. While adjusting the pH