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The second half of the experiment corresponds to a new addition of 100 grams of lime after 45 hours. Low readings are due to pH probe calibration. It can be observed that the increase in pH was dramatic and that both reactors remained above 12 for 19 hours (A1) and 27.5 hours (A2). Despite these promising results, the high fluctuation and the readings above 12.6 make them inaccurate and nullify the data. It is necessary to repeat the experiment when there is more certainty regarding the pH probe readings. 
