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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

when we use pda detector in hplc instead of uv detector

Hetero,

6 25383

why we use holmiumperchlorate in calibrating uv

Aurobindo, DRL, MSN Pharma,

4 18509

why chiral compounds will rotate the plane polarized light in SoR.

GVK,

4 15271

Why sulpuric acid only used to ROI but not used nitric acid and some other acids?

Cadila, Laurus, Ranbaxy,

7 32743

how we do assay of urea, ammonium sulpate, ammonium nitro pospate etc

Alembic,

1 3867

what is difference of uv and pda

Akums, MSN, MSN Pharma, Shilpa Medicare,

13 70574

how can you do the analysis of compound given to u by hplc

2 8597

What is calibration procedure of gredient HPLC pump

4 25667

How to determine water content of thioanisole? which interfere by KF titration?

1 7740

what is dissolution

DRL,

6 28403

What is colimn selection Criteria in HPLC analysis?

4 15940

How to select buffer for HPLC mobile phase

Cadila, Cipla, Lupin,

4 23167

What is primary & Secondary Standard ? Give Example

Cipla, Lupin,

17 166991

Which buffer is used for LC/MS mobile phase & at What Conc.

3 11454

How we fix the validity period of a Normal solution and re-standardization due date

3 9305


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

What is the requirement for brazil in the analytical method vslidation comparr to ich?

782


Why irmoisture balance is used for corrugated box moisture testing

2404


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

734


in which situation ion pair agent require to use?

739


How to set analytical specification for combination products?

818


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

2833


USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

2015


cefoperozone and sulbactam inj. hplc test method

2692


how to calibrate hplc & gc

4511


sop of a uv visible spectrophotometer double beam elico model

5926


In the HPLC Calibration done wavelength accuracy done between 200nm-280nm .but not done remaining 300-400nm not done ?

926


what you do when compound having dwel wavelength?

750


What is similarity factor and its use in api strength?

1299


for inorganic molecules require to do RS, Assay and disso?

734


How to start the dissolution development for unknown tab?

1680