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How we fix the validity period of a Normal solution and
re-standardization due date
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Answer / shravan kumarm
Initially we have to prepare a normal solution and to
standardise that solution against aknown fresh normal
solution.After that in particular time intervals for
examples o th day ,7 th day ,15th day and 30th day we have
to restandardise that initial normal solution against a
fresh known noramal solution each time .up to which
interval the normality of initial solution will not differ
by more than +/-0.002,that interval day we can fix it as
validityperod.In this mean time we have to consider the
physical apperaence of the solution also in to cosideration.
| Is This Answer Correct ? | 14 Yes | 1 No |
Answer / shravan kumar .m
As per EP the % RSD OF two cosecutive standardisation
values should be NMT 0.2%.What evar above i have proposed
is less than this .is it ok.
| Is This Answer Correct ? | 1 Yes | 3 No |
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