pH Time Response Chart
pHTimeResponse1.jpg

Introduction

The time response of the pH meter is plotted against the pH. Firstly the pH meter is being placed in a solution with pH 7, then it is being transferred to another solution with pH 4 and pH 10. Then the time for the pH to reach to ± 0.2 of the intended pH is then being noted.

Analysis

From pH 7 to pH 10

Time taken to reach 0.2 of the intended pH = 3.42 - 2.58 = 0.84s

From pH 7 to pH 4

Time taken to reach 0.2 of the intended pH = 4 - 2.58 = 1.42s

Average

Average time taken to change 3 pH level = 0.5(0.84 + 1.42) = 1.13s

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