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Old 04-30-2019, 04:13 PM   #3
Junior Member
Location: Melbourne, Australia

Join Date: Aug 2013
Posts: 8

Thanks for the reply. My 1N NaOH is about 8 months old now. I make up my working solution as I am denaturing. This issue occurred 1 day after making my stock and 8 months later on my second run.
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