Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

when we use pda detector in hplc instead of uv detector

Hetero,

6 22678

why we use holmiumperchlorate in calibrating uv

Aurobindo, DRL, MSN Pharma,

4 16501

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

GVK,

4 13198

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

Cadila, Laurus, Ranbaxy,

7 28866

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

Alembic,

1 2870

what is difference of uv and pda

Akums, MSN, MSN Pharma, Shilpa Medicare,

13 66200

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

2 7582

What is calibration procedure of gredient HPLC pump

4 24056

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

1 6895

what is dissolution

DRL,

6 25599

What is colimn selection Criteria in HPLC analysis?

4 14161

How to select buffer for HPLC mobile phase

Cadila, Cipla, Lupin,

4 21279

What is primary & Secondary Standard ? Give Example

Cipla, Lupin,

17 161216

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

3 10022

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

3 7829


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

How to start the dissolution development for unknown tab?

1112


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?

1215


What is related substance by HPLC impurity limits as per USP?

532


Why are use silicon oil mr?

713


which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

1705






in each media we require to use SLS? how to proceed?

273


What is third generation HPLC Columns?

1486


cefoperozone and sulbactam inj. hplc test method

2097


Loss of linearity in tkn analysis, possible reasons?

779


what is mean by peak intigrity?

309


How to calculate coreletion coefficient

1107


in api coa contains only process impurities and in product coa contains degradation impurities?

295


i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

2161


What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

8284


How require to perform linearity as per ANVISA? What are the acceptance criteria?

684