Re: Standardizing NaOH and HCL

The following procedure published by vinquiry, using HCL, is the one
I've been using for years;

http://vinquiry.com/pdf/reagentstandardQ.pdf

For the few months that it resides on my shelf, 1N NaOH is plenty
stable. I always standardize after making up the various
concentrations, so I'm quite certain of this. Yesterday I ran across
data on the net for the pH levels of the various concentrations, and
they seemed to be predictable with the readings I was getting from the
above procedures. Just made me wonder.

And, for he record, this concentration of NaOH (0.01) is being used for
an A/O test, so the results are a bit more important to me than those
for TA.

thanx again for your comments,

clyde

.

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