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Question about NaOH that comes with TA kits
I have one of those inexpensive kits for measuring TA. It came with a
bottle of 0.2N NaOH. I know that NaOH loses strength because it combines with CO2 from the air. So the question is: how long can I keep a partially full bottle of 0.2N NaOH until I have to throw it away and get a new one? Weeks, months? I know that I can standardize it, but that requires other chemicals and equipment, which I don't have. I would just rather spend $6 every so often and be done with it. Thanks. |
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