in hplc chromatogram started from left to right and in uv spectrum started from left to right

905

For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1860

In Dissolution Test why limit is define Q+5% what is the role of +5%.

3060

How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?

693

how the compound separate in coulunm,explain

2471

What is Band broading effect explain

1836

why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

9722

what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

1986

when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

2000

How to start the dissolution development for unknown tab?

1634

why we use a particular hplc column for a particular compound give reasons?please

2700

Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2788

How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?

3316

Why are use silicon oil mr?

1164

what is procedure of actual procedure for registration of drug?

1972