Un-Answered Questions { Analytical Chemistry }

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

2556


what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

1480


Basic principle of ESI?

1632


Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?

2192


Why a1% value is used for some product ? What is the criteria for selection a1% value ?

1856


What is aggregate and fragments in SEC?

1566


What is the calibration of uv process and preparation

1488


Identify problem faced when mass spectroscopy is used with HPLC system ?

1367


Explain the relations between number of carbon atoms in alkanes and retention time ?

1618


Difference between hlaf and rlaf

1637


What is the main difference between ODS1 and ODS2 Hplc column.

4453


What is the acceptance criteria for moisture balance when calibrated with sodium sulfate

1537


In IR spectra, generally a molecule vibrates without apply emr or ir light?

1424


Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?

1365


How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

2517