Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

give clarity of linearity and range in method validation

942

how do we get usp reference standard potency?

MSN Pharma, Ind Swift Laboratories,

1 1831

what is the origin to prepare standard operating procedure

963




why we are using sodium,potassium phosphates for mobile phase preparation?

1 7751

why water factor is near about 5.0 in kf titration?

Claris Lifesciences, Indchemie Health Specialities,

3 9703

Why 1800 ml of dissolution media used In Carbamazepine ER USP Tablets But other drug only 900 ml Media Used ?

Torrent Pharma,

1 2724

what is use in calibration of conductivitimeter?

SRF, Claris Lifesciences,

1 2921

how to calculate corelation coefficient in G.C Calibration? what is the calculation part?

Ortin Labs, Cipla,

979




reasons for negative peaks in chromatography

DRL,

5 9980

why octanol used to determine the partition coefficient ?

971

if partition coefficient value was positive means, what it indicates ?

1 1927

why has inject 5 injection in assay

Lupin,

2 9668

why has inject 6 injection in Releted compounds

2 6854

why we should take dst factor for below 1%moisture samples

Ind Swift Laboratories,

1401

what is end capping in hplc coulmn

Lupin, Zydus Cadila,

2 8533


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Un-Answered Questions { Analytical Chemistry }

what are the standard methods for HPLC?

1495


what is third integration

706


Tell me about analytical method validation in QC

1899


What is viod volume and peak purity in HPLC?

1349


How to do regeneration of Metacarb Pb plus column?

1263






What is the purpose of octyl silane columns?

2642


How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

2437


In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

310


Difference between hlaf and rlaf

689


In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

726


What is diffrence between extractable volume and deliverable volume? Answer pls

818


can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

913


Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

657


how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

1095


What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

1313