Purdue/2 June 2008
From 2008.igem.org
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Began milk pH testing. pH tests will occur every four hours between the times of 8:30 AM and 4:30 PM until consumer acceptance level reaches spoiled.
Consumer acceptance will be based off of three non-iGEM team members recommendations.
A digital pH meter was used in the experiments and calibrated before each series of tests.
Three milk samples were tested to account for variability.