How we fix the validity period of a Normal solution and
re-standardization due date
- 3 Answers
- 7895 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
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 |
how many types of Proceing methods?
What is the definition of RRF
What is Fourier Transform Spectrosopy?
5 Answers Aurobindo, Hetero, Lupin,
What are the different zones in stability according to ICH?
why salisylic acid not using now days for disdolution calibration?
how ir specrometer is calibrated ?
in what basis wavelength will select for a compound at initial method development trials
what is the difference between BDS and ODS Columens and both are same or not
2 Answers Intas, IPQA, Micro Labs, Vasava Engineering Private Limited,
Why we use holmium oxide,perchloric acid for uv/vis calibration
4 Answers Cipla, Orchid, Ratiopharm,
class of solvent regarding Residual solvent e.g. Acetone his class
what does optical rotation and specific rotataion means,difference between them
What is the principle of HPLC?
Organic Chemistry 
