Posted by **elizabeth** on Thursday, August 11, 2011 at 6:11pm.

I performed a "related substances" test using HPLC on 1 sample. The 1st value for an impurity is 0% (not detected) and the 2nd value is 0.3%. THe passing limit is 4% for this test.

Are the results acceptable, i.e. to take the average of the 2 values to give 0.15%?

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